To the OP its quite funny as i just finished the game about half an hour ago too.
I played as a Bad guy and the game was generally easy as well.
After getting a Chinese assault rifle with 400 bullets i could easily plow my way through each dungeon...
I was also a sneaky bastard which made it a lot easier to kill things, the whole sneaky sneaky first shot = major damage.
One point i wanted to point out though is that once you do the last level you cannot continue the game... So say for example you save at the last point and you only have one save you're pretty screwed as the doors magically lock and you have to either save the day or fuck everyone elses up.
I did quite a few side quests but in total it took me 19 hours to do.
I didn't spend time locating things but i did spend a lot of time seeing my friends the ghouls in Tenpenny tower
Bit silly though... I played the previous Fallouts and they were off the chain... they were very long and had a lot of content to last me till the end of time.
Heck even oblivion served me longer than this game but thats not the point. The point is that i was satisfied