How fussy are you re your DC's rooms?
My 2 DS's (16 & 11) are fairly tidy although need to be nagged but my 14 yr old DD's room is quite often a bit of a mess and my partner (in the military) comes home and is constantly nagging me about it and I am placed firmly in the middle. They do do jobs around the house such as folding clean washing, loading and emptying dishwasher, generally helping for which they earn pocket money.
Personally as long as it's clean I am not really that bothered about how tidy it is and my attitude is that it's their space in the house and it's up to them how they keep it as I don't have to be in there.
OH is an involved father with his own children but due to his job has never lived with any of then for a prolonged period of time (therefore not really grasping the full reality of teenagers and if this is the worst crime they are committing then we aren't doing too badly).
This is becoming a constant point of grief between my OH and I when he comes home and I am beginning to wonder if I am taking a stance (insisting military levels of tidiness) to keep the peace with him rather than inforcing my own parenting on my own children (without telling him to MHIB yet again).
What do others expect and AIBU to think this is a) a war I am never going to win and am really not overly bothered about and b) there are more important things in life than getting uptight about DDs room to "keep the peace" with him as it were.