Should I get a video game system (see details)

My Situation:
* Work regular hours.
* Have some free time at night (5 hours or so).
* Read/write a lot at work already, so not interested in doing more reading/writing when I get home.
* Live in quiet residential area, so not much nightlife here. Not a partier myself anyways.
* It gets dark quickly at night. Not too comfortable driving in dark, especially when it is raining.

Basically, I want an indoor activity that does not require too much effort and that allows me to just relax. Social interaction not an issue as I get plenty at work and with my family/friends.

In this circumstance, would getting a video game system be a good idea?

Follow up: If it is a good idea, I am debating between a Nintendo 3DS and a PS Vita/PSP. Only have Wii system right now. I like adventure games where you go on quests, solve puzzles, and collect power-ups/items/etc. Sports-related games also ok. Not too keen on shooters or fighting games.