I rage quit New Vegas.

It was my own stupidity really. I assumed Bethesda wasn't going to pull another bullshit forced ending and I ran through the story line way too quickly. By time I made the idiotic mistake of siding with the legion and starting the end fight, I had put about 14 hours into the game and I was only maybe level 24 so I kept dying and dying and dying some more. I tried leaving the area and doing other shit but it wouldn't let me start any new quests or make any new progress. I know it basically gives you a warning that if you make the decision to pick a side, there is no going back but I didn't think it meant that I had to finish the story before I could do anything else.

I couldn't load a previous save because again, I was stupid and marathoned about 6 hours of exploring. I also repeatedly saved over the same file. It was entirely my fault and I know it but it doesn't change the fact that I was incredibly pissed. I remember how much people complained about Fallout 3 abruptly ending before Bethesda added DLC so I wrongly assumed it wouldn't be an issue in New Vegas. My frustration killed my desire to keep playing or start another playthrough.

I also fucking hated that stupid cowboy robot fucktard.

As you can see, I'm still angry about it.