I was an OS/2 evangelist among my university friends. We would install and try to run the DOS games and it worked flawlessly, and I even run a BBS on it, on 1995.

Unfortunately, we've all migrated to NT 4.0 as it did the same things but it has better hardware support because of drivers.

Since then, it was a painful decline and I believe the only production system running OS/2 nowadays are IBM mainframe consoles, as IBM migrated away desktop enterprise machines to Linux.