It does if you're both being cheap and a fan of the "outdated" phone you're buying.
-Does it make sense to buy a somewhat outdated phone at all? I know this is a judgement call, but give me your opinion.
<soapbox>Above you suggest that $100 is too much for an off-contract device. This thing is an always-connected phone/camera/computer that fits in your pocket! That you can get it for a Benjamin without any obligation is amazing. The more popular smartphones get, the more I wonder at how little everyone thinks these things "should" cost. </soapbox>
But getting back to it, the no-contract part is important since, yes, the ecosystem may be dying and that's a serious concern. But the price is cheap as it is, and you won't be using your phone upgrade if you buy one on the side from eBay or the like. When you grow tired of your Pre 2 or if it becomes completely unsupported, you're free to get something brand new from VZW direct with their subsidy. So a no-obligation smartphone that should easily last another year is a pretty safe hedge.
At any rate, you're completely right as this is a "judgement call." It depends only on what you consider a value and what you can spend.
I'm kinda poor, so I play it cheap. But I know a $100 Pre 2 is a good value, so I did it and only wished I'd done it sooner!
For just the phone I think they're averaging $120 still. I got a used one on craigslist for $80 for my FrankenPre2 that was like new.
-What's a good price on eBay for a new Pre2? What about used? I really don't know what these things are going for and don't want to overpay.
I would say overclocking isn't necessary. That seems to be the consensus for all but the hardest of the hardcore.
-I've read multiple people on here talk about how the stock Pre2 is faster/smoother than an overclocked Pre+. Do most of you overclock your Pre2 or is it just not necessary?
The screen is tough Gorilla Glass. Hard to scratch, but still might want a case if you drop it a lot.
-Does the front of the Pre2 have gorilla glass or something like it? Will I need a case to protect the screen from scratches like I do on the Pre+?