Wow, the concensus seems to be unanimus!!! I agree withy what everybody else says. If you two are secure with arrangement, it's really none of there business.

Although my wife & I don't have seperate rooms. I spend alot of time sleeping downstairs on the couch for a variety of issues...
1. my oldest daughter is the only one sleeping down stairs & because of my life issues, I feel more comfortable sleeping by the door. I feel like it puts me in the best position should someone break in to protect my family.
2. My wife gets alot of sinus infections & snores so it keeps me awake.
3. I sometimes have violent dreams & either moan loudly or kick or omething. One time I elbowed her really hard...I felt aweful.
So I pay attention to my mood at bed time. If I'm worried about it being an issue that night, I'll sleep on the couch...

If you guys are happy with your arrangement that's all that matters