Claire - the best way to look at it is that your grandchildren won't be shocked by it anyway, so all you have to do is make sure your shots are GOOD QUALITY. That excuses everything

I'd say do what makes you happy.....

i am a photographer
i shoot nude pic too
i never sell them
i give it back to my customer.
i never paid any girl for posing so far.
nor had any sex with any girls who pose for pic so far.
these girls have an interest to take nude pic and they ask me and i shoot for them, charge them for my film and time only.....
never post their pic on web or misuse them..... its interesting...