The whole point of dedicating yourself to one person is to try to please them so they won't have to look for alternative places for pleasure....
No disrespect here - but is this really how you view marriage?
The reason you decided to marry your wife is so that she would not have to look elsewhere for pleasure?
And if so - how are you doing?
And something more to think about....you mentioned that if she won't give BJs after one child - how could you expect her to give BJs after more than one child when there will be even more chores for her to do
Why do you assume that all the chores of raising children should be hers?
If you've never been responsible for small children during the day - you have no idea the constant demands they place on a person. Yes - the obvious is that they cannot do anything for themselves, so they need her for all their needs. But beyond that - small children are grabby, clingy, drooly....those babies will be grabbing her boobs, her hair, her face, her hands, her legs....anything they can get their chubby little hands around. AND they will be rubbing their mouths all over her...she will have baby drool on her clothes, in her hair, down her shirt... And this is normal - that is life.
So now she comes to bed to rest - FINALLY a place to be a person and not just a tool for meeting somebody else's needs...
and what happens?
Her man wants to grab her boobs, her hair, her hands, her butt - he wants to run his mouth all over her... but the WORST part?
After an entire day of answering to Me! Me! Me!
She now has to hear ME! ME! ME! You need to do this for ME!