Another vote for the D7000.
if ALL you want is a glorified point-and-shoot, then sure, go for the D5100.
I'm NOT saying it's just a glorified point-and-shoot
Are you kidding me with that post? LMAO!!! Thanks for making me laugh!
Go with the D5100 if you want a camera that will perform as good, if not better, than the D7000, but is smaller and lighter and will go with you more places.
Don't listen to the jabber. People respond to your post without thinking about your intended use. It seems to me that you want the camera to follow you on your bike and on vacation. I am an avid mountain biker and due to the size and weight of the D5100, I am able to carry it in my CamelBak every time I ride, without thinking twice about it. It is the lightest, most capable, most "bad-a$$" DSLR that you will not hesitate to take with you everywhere you go.
Here's my write-up on the D5100 with a bunch of sample pics and a video.
Err...no, I'm *not* kidding you with that post. Not kidding the OP either. I *might* have used a bit of extremism to get my point across.

I've GOT a D5100. I'm not bashing it. I love mine, and I, too, take it everywhere I go.
And I most certainly did NOT respond to the OP's post without thinking about the intended use. But instead of thinking ONLY about his stated intended use, I also thought about the rest of what he said.
Look, he's a former semi-pro. He knows his way around a camera, and--I presume--he really enjoyed it. The likelihood is, when he gets a DSLR and gets back into it, he is going to quickly want to get more and more into it.
AND--and this is really the kicker for me--he's got old, quality glass. He can use that on the D7000 and still auto-focus, but not on the D5100. And the OP may be comfortable using manual focus, but it sounds to me like his wife wouldn't be.
Considering the investment he already has in those lenses, I stand by my original assessment: Get the D7000. If it turns out to be too much camera for your wife, get her a really nice point-and-shoot or bridge camera. You'll still come out ahead in the long run, because you aren't having to buy all new, more expensive, AF-S lenses.