needing new wheels

I took my bike in for a tune up last week and got "the call" a couple of days later. It seems there is quite a lot wrong with it -- just about everything except for the frame needs replacing! I wasn't totally surprised. I've had the bike a long time, put a lot of miles on it, and it wasn't an expensive bike when I originally bought it. (I should also mention the owner of this bike shop is very honest and reliable.) So... in terms of money, it actually makes more sense to get a new one.

I've started looking a bit at new bikes. I sort of have myself pictured this way:


Yet, the sales people keep showing me bikes like this...



and/or this...



I mean, really -- What's up with that?!