Then I saw my hours played on Steam.
150 hours is about what it took for me to get bored for the first time.
I can't even REMEMBER a game that kept me entertained that long. When I was 16 I spent an entire summer playing Final Fantasy 7, 80 hours or so of gameplay, and I thought that was a ton. I loved Mass Effect 2, played it through 4 times... 72 hours played (Steam kept track as well).
But holy mother of fallout, 150 hours of gameplay?
Then I realized I'd never done the Deathclaw Promontory and was no longer bored...
