I tried it in college, borrowing blades from some dormmates. I didn't think I'd own a pair after that, even though I had fun. It was my future ex-wife that wanted to go rollerblading many years ago as a date, so I bought a pair. It wasn't until well after she was gone, that I started up again. Kinda started when my last GF dumped me and I needed to blow off steam. Now it's just exercise and a challenge to beat my previous times.
Later in Summer, I should be up to a 13.3-5 MPH average.