Was the main character happy/satisfied with his life?

What do you guys think?

Yes

I think he is satisfied and happy.  Like what op said above, he's able to find joy in the little things in life, works hard at his job and has crafted a routine to what you would say as his "perfect day".   But no matter who we are life will suck sometimes, so there will be moments where we feel down.

But I do think he is reserved and a bit lonely and there's room for relationships in his heart.