Well- I'm sorry Boomer. From your first post I had the impression you were in a domestic spat and seeking advice from the male point of view in order to better understand Mr B's resistance. You did emphasise the "totally". Advice from other ladies wouldn't help much as it would likely just confirm your own position and the problem would remain.
In fact, I can't see why you asked for any advice if you were going to get indignant at any you didn't approve of.
On the matter of whether to buy or rent the kit it is worth bearing in mind that there are large numbers of people who would choose either option all of whom would advise you for the choice they would make. Which gets you nowhere.
One advantage of buying it is that after the event the kit can be mothballed and kept as a family momento to be passed down the generations.