Do you think Saitama is actually happy?

I've been thinking about this for a while.

Everyone talks about how strong Saitama is, but I don't really see people talk about whether he's actually happy. He finally reached the goal he worked so hard for, but instead of feeling satisfied, he just seems bored most of the time.

Even when he's hanging out with Genos, King, or the rest, it feels like he's just going with the flow. There are moments where he looks like he's enjoying himself, but I still get the feeling something is missing.

Do you think Saitama will ever find what he's looking for? Does he need someone strong enough to challenge him, or is what he's really missing something completely different?

I'm curious what everyone else thinks because I feel like his biggest struggle isn't his strength, it's finding something that makes life feel exciting again.