Some guys lose all the hair within a short period and it doesn't bother than much at all. I've met guys who I'm pretty sure kind of enjoyed going bald. I think there would be a few pivotal moment that would most likely bother someone. The first time you suspect any hair loss, when you realize it's not in fact a maturing hairline / the barber didn't make your hair thin in a spot , when anyone comments on it. Maybe it wont bother ever you, I wish it didn't bother me! However, I feel like its relevant to add that maintaining your hair is way easier than regrowing in bald spots. So if you were going to go down a treatment route at some point in your life, it would make sense to do it sooner rather than later. Along with that, it can be difficult to project how you will feel about the issue within a few years.