Yes, eating is relaxing. There is a part of your brain devoted to making you want to have sex and eat. They call it “comfort food” for a very good reason. That is also why alot of people get very very fat. They learn that eating makes them feel better and eat whenever there is the slightest bit of stress.
If it works for you and it’s under control, hell it might even help if you are super skinny, then it’s all cool. But you can’t just eat peanuts when you’re wife kills herself after the baby dies suddenly in your 20s, or something bug like that. You need to take this time to develop the skills to deal with stress. The biggest trick is to just take it. Sit with the feelings and trust that they will go away on their own. Know that you don’t have to act on feelings. You don’t have to eat or fight or run or quit your job etc. You can just find a quiet spot and sit still for a while.
Life’s only going to get harder. You’re going to deal with stress whether you like it or not. The outcome of that is your decision.