For the most part I only bought imports on systems without region locking or ones where it was trivial to bypass the lock.

One of the main reasons I hacked my 3DS was to make it region free (and custom themes and game mods). That having been said, I have exactly one import game for the system (it’s Picross 3D: Round 2 which received a physical release in Europe, but not North America).

My Dreamcast is a MIL-CD compatible model, so it’s possible to get past the region locking with a burned CD-R. I don’t have that many games for the system, but most of the ones I have are imports.