All of those things are possible while maintaining social distancing. If you are young, then 4 months is whatever, you have plenty of time left in your life.

You are right, the cost/benefit is not there if you care only for yourself and you are not someone who is immune-compromised. The ask is that you consider other people (do you have any family or friends who could die from this?) and even if you have mild or no symptoms, you could act as a carrier that infects other people and may even be responsible for the disease that kills them.