Owning energy or oil stocks is never a good option and using the argument that a particular oil stock such as Exxon/Mobile is down 50% as a reason to buy it is a terrible idea.
Remember: Just because a stock is down 50% or more, that doesn’t mean it will be a good long-term investment. It may come back a little and plateau for years or not come back at all.
Investments need to have a catalyst for growth of earning as well as growth of sales. In general, the oil energy sector doesn’t have great growth potential.
Word to the wise: Oil is cheap and it will stay cheap; stay out of oil!