Hi, I am a 38 year old male with 4 kids & been happily married for 14 years - when we were 1st married I spent all of the summer naked around the house with no protest from my wife & she was well aware of my naturist nature as when ever we went to a secluded swimming hole I always was nude - she even did it too! 
Even when our first child was born she did not mind me being naked, she would video me playing with our child naked (camera angle above waist) 
Then as the children grew up she started to get more & more prudish & started to ask me to cover up in front of the kids, (which I did to keep the peace) 
Last summer we lived at house with a pool & she tolerated me swimming nude at night, but this year (I am in Australia - hot days of spring started already) she is freaking out if I lay in bed nude! 
Now the children are 8 (boy) 6 (boy) 4 (girl) & 2 (boy) & she has got it into her head that I am some sort of pervert who gets off on cavorting around naked to give myself pleasure, I have pointed out to her if this was the case why don't I have a erection & she brushes this off - she says I must love myself - I reply that I am more comfortable nude - she will then say I am no stud either which I find a put down, I asked her if I toned up & lost a bit of weight could I walk around nude? she didn't have an answer for that one! 
 
I want other womens opinion's about this issue, am I normal? if so what can I do to convince her? I think she is being overprotective of the kids, I belive they should be exposed to nudity so when they grow up it is not a big taboo/obssesion etc