If your husband isn't gung ho at this point, there is nothing to guarantee that he will be in the future. When we bought our DVC points, both of us had decided that we wanted to go to WDW every year. Up to that point we had taken occasional vacation, nice ones, but not yearly. Once we bought our DVC points we were planning our trips for several years in advance to WDW.
I think just getting your husband in a regular vacation mood would be the first hurdle. DVC isn't the best for trading out to other locations. Just read all the fuss about changing from International Interval to RCI on another thread. While Disney tries to push trading out, I don't think they really want members to trade out. And they really don't want us to use our points at non-DVC Disney resorts either. Otherwise they wouldn't require the $95 fee just to book it; they would negotiate prices better or be a little more timely with that negotiation. Even the
DCL (we used points many years ago for this) goes up every year.
Once you get him into the mood of taking regular vacations, then you could try to add the Disney factor in.
But, unless you really would be content taking only DVC vacations, I'd suggest not buying DVC points at this time.
Thanks for your thoughts Deb & Bill. I usually prefer to refrain from posting details about my personal life because that invites people to judge which necessitates having to post more details so people don't judge you wrongly, etc etc... right? It happens all over the DIS!
My DH is "special".

He has vacation issues from his childhood. I don't fully understand what his inner emotions are and how his past emotions relate and trigger feelings about vacations for our own nuclear family. He opens up occassionally when he's in the right frame of mind and the business of life doesn't get in the way. It's not like he has a phobia about vacations and can be slowly introduced into seeing that they're OK, eventually reaching some imagined goal.

That kind of technique might work on kids or dogs but not for DH. It has been a small victory that he is entertaining the idea of potentially buying DVC.
I'm not saying even that I'm trying to brainwash him into going along with a purchase. You're right, there's nothing that says he will be gung-ho in the future. Which is why I'm gathering info about renting. He will feel less pressure to have to go every year, every other year or every third year if he knows that the points wouldn't be wasted money and we could make back some of the maintenance fees.
As for the idea that you brought up of using DVC points elsewhere. I'm already on board with the Fact that it's a poor use of points. So in my pre-research thinking, if we were not able to use points for our own vacation within 3 years, or had excess points, we would rent them out.
For myself, there are very few vacations that I want to do besides Disney.

I'd feel like I was wasting precious Disney time by going elsewhere just for the sake of trying to get him to like vacations more. I grew up in Hawaii so when we go there for visits, it's not so much a vacation as it is spending time with my family. In between those times when we have to spend vacation money going to Hawaii, I really, really would rather go back to Disney. Our kids are so young, we haven't established what our family vacation pattern is yet.
Anyway, thanks for your comments. As you see, I wrote out a lot of my inner thoughts and it's helping me gain clarity about my situation. So much for not putting my personal business on the DIS!
Also, thanks very much, spiceycat for posting! This is the kind of hands on information that really helps!