With more than $75 billion of infrastructure assets, Energy Transfer (NYSE: ET) is one of the largest pipeline operators in the U.S. The company and its CEO, Kelcy Warren, are often in the news -- be it for controversies relating to its pipelines or for the company's acquisition attempts. Energy Transfer stock has fallen to less than half of its price at the beginning of 2020. It currently offers a tempting yield of more than 20%. But considering the risks involved, I'm staying away and you would do better by avoiding the lure of this high yield. Abysmal returns In five years, Energy Transfer stock wiped away more than 76% in market value. Even including dividends, investors lost around 63% of the amount they invested five years back. ET data by YCharts That kind of performance is poor by any measure. While the beaten-down price looks attractive today, the company's fundamental issues make it a risky bet. High debt load Probably the biggest issue impacting Energy Transfer is its debt load. The company had a massive debt of more than $51 billion at the end of the second quarter. Energy Transfer's debt has grown substantially over the years, thanks to its aggressive growth strategy. The company has made numerous acquisitions and undertaken several growth projects supported by debt. ET Total Long Term Debt (Quarterly) data by YCharts As the above graph shows, Energy Transfer's debt increased fourfold in ten years. For comparison, long-term debt of peers Enterprise Products Partners and Kinder Morgan slightly more than doubled during the same timeframe. Energy Transfer's debt-to-EBITDA ratio is above six times. High debt restricts Energy Transfer's options in case oil and gas market conditions remain challenging for the long term. Controversial projects Several of Energy Transfer's pipeline projects, including the Dakota Access Pipeline and the Rover Pipeline, have faced regulatory hurdles as well as opposition from environmental groups. Energy Transfer's woes relating to its controversial Dakota Access Pipeline didn't end even after it got built. The company was recently asked to shut it down, though it has managed to keep it operational through a temporary stay. Sure, Energy Transfer has managed to put into operation several of its controversial projects over the years. But these issues highlight a key regulatory risk that the company faces. Indeed, all pipeline operators face this risk, but Energy Transfer seems to end up being in bigger controversies, perhaps due to its aggressive stance. Image source: Getty Images. Structure Another characteristic that makes Energy Transfer unattractive to some investors is its master limited partnership structure. Once hot, this structure has fallen out of favor, resulting in several MLPs converting into C corporations. Energy Transfer is also evaluating such a conversion. If it happens, long-term investors with a low cost basis may face significant tax liabilities. With dwindled interest in MLPs, a meaningful recovery may be particularly challenging for Energy Transfer stock. Track record One of the reasons behind investors' dislike for Energy Transfer is the company's poor governance practices. Examples in the past include a complex corporate structure and backdoor distribution cuts at Energy Transfer Partners and Sunoco Logistics Partners. Management's appetite to grow, at the expense of balance sheet, has also been routinely criticized. In short, the company doesn't inspire much confidence for investors to trust their money with it. Why I won't buy Energy Transfer A top reason to take on risk in the case of high-yield stocks is attractive dividend income. But if there are more conservative stocks out there offering immensely attractive yields, it doesn't make sense to put your capital at risk by investing in risky stocks. Given Energy Transfer's track record, I would rather own less leveraged names -- such as Enterprise Products Partners and Kinder Morgan -- that offer enormously attractive yields with much lower risk. 10 stocks we like better than Energy Transfer LPWhen investing geniuses David and Tom Gardner have a stock tip, it can pay to listen. After all, the newsletter they have run for over a decade, Motley Fool Stock Advisor, has tripled the market.* David and Tom just revealed what they believe are the ten best stocks for investors to buy right now... and Energy Transfer LP wasn't one of them! That's right -- they think these 10 stocks are even better buys. See the 10 stocks *Stock Advisor returns as of September 24, 2020 Rekha Khandelwal has no position in any of the stocks mentioned. The Motley Fool owns shares of and recommends Kinder Morgan. The Motley Fool recommends Enterprise Products Partners. The Motley Fool has a disclosure policy.Source