Well let me share with you guys my experience ...
I've been married to the same girl for 7 years and together for 11 years and she supports my hobbys !!
I'm heavy into modelrailroading and rc (to very expensive hobbys)
Basically its simple as long as the bills are paid and I take here out and dont spend all my time with my hobbys she is fine with what i spend .. I know how much is to much so i dont go there but my point is as long as your wife is happy then she should not care what you spend on your rc collection or how many cars you have ..I got like 12 cars , 3 boats and tons of parts etc...
As for dont let her know your rc10talk password .. well she signed me up to this forum guys!!