And particularly, rpg's/adventure games with a lot of grinding in them, which Monster Hunter 3 Ultimate may have.
I sort of feel guilty playing a game like this, that has hundreds of ours of gameplay, when I could be doing other stuff outside like throwing frisbees, going for walks, or running around in circles around a tree.
I sort of feel like 20+ years old gamers should stick to either playing really short games like arcade ones, or quite altogether, since we could be more productive doing other activities.
There's nothing wrong with playing games as a 20 year old. Just don't tell people it's Monster Hunter 3 Ultimate. Just lie and say it's Halo, Metal Gear Solid, Skyrim or some other game that requires big boy pants.