Since I have worn glasses (now contacts) since an early age 3D never really appealed to me, it just never worked as well for me as for other people, to the best of my knowledge.
It really depends on what game/program I was using. Some games seem weird on surround when I played them (Such as minecraft a long time ago), but others worked really well (Planetside 2 and Tomb raider). The 3 monitors also gives you much more real estate outside of gaming, and that would be the major draw for me. Only about half my time is spent gaming, the rest is videos, netflix, homework, this site, skype and general web browsing.
Overall, I prefer surround setups over 3D, as its just always been finicky for me.