As said in another comment, I understood a little bit more after another explenation.

I did a lot more hours for projects, that were quite fun for me, while doing everything I could, to make sure our "customers" (as it was an paid event, but in a hobby-environment i wrote the "") had an exeptional time.

So yeah, I'm totally OK, with working long hours. But not, if a boss "just" demands it.