I think it all depends on what style you "cut your teeth on".
When I was a boy, my dad used S-K. So, that's what I was used to using on my bicycle, projects, etc. When I got out on my own and started working mechanics, naturally I gravitated toward S-K, because that was what I was used to. About two years later I was walking through the tool section of a big box store, and found an individual Thorsen roundhead sitting on the shelf. I asked the clerk, he didn't know where it went, so told me, "How about a $1?" I figured I needed a spare, so I took it. Those two ratchets were the only ones I had until I started collecting tools around 1999. (I still have both, by the way).
Since then I've had more ratchets cross my workbench than I can remember. In over 20 years not one have made me think about getting rid of the first two. The fact that they're roundheads never entered my mind until I started joining forums and reading about the roundhead vs. other debates.