I don't exactly disagree with Jiro, but I think it's a great idea to learn. Especially if you take the test, get your permit, then take the other test and get your license. Then if you do get rusty, you'll just have to freshen up your skills and knowledge, but you won't have to go through all the red tape of testing again.
And in the meantime, you'll have a license, which is just nice to have. (It's such a common form of identification.)
I had a car when I was young, but didn't need one in college or grad school, so I went for years without one. When I got my second car it was actually really easy to start driving again. Then, years later, I decided I wanted to see how much I could get by on my bike and I drove my car very rarely for a year (I just took it out once in a while so it wouldn't suffer too much from sitting too long, but sometimes I'd even forget to do that.) And again, if I lost any skills, I think they came back almost immediately.
The only thing that I had to focus on a little was driving a stick shift. My second car had a manual transmission but my third was automatic. After years of driving that, I had a relative who wanted to learn to drive a stick on her parents' car. I wanted to help her but wasn't sure how much I'd remember. It really only took a few minutes of driving around to get the feel for it back. (And if you get a chance to learn to drive a stick shift, go for it. It's so much fun, and it's a good skill to have if you ever need to drive one. I really miss mine - it's nice to have control over what gear you're in. Especially in icy winters around here with our Pittsburgh hills:0)
Anyway, good luck, and good for you!