Yeah, the Motorola 68000 CPU was used in a lot of arcade boards at the time, so the Sharp x68000 is home to a wealth of arcade perfect ports. Capcom actually used x68000s as their dev machines for their CPS1 games.
Whether it's worth emulating is really down to the number of x68000 exclusives you might be interested in playing. Theres a great version of Castlevania on there called Akumajou Dracula and the system has quite a few exclusive shoot 'em ups that are worth checking out, Cho Ren Sha 68k being worthy of mention. If you are into shoot 'em ups, it's worth checking out as it's a genre that is English-friendly.
If you are already using RetroArch, there is a good x68000 core available.