Onlyfans

What is the appeal of only fans??

I 32F engaged to a man 39M who I feel is otherwise perfect except for his only fans addiction.

However I manage our finances and everytime we spend anytime overnight apart I see an only fans charge.

I’m not sure my feelings on porn but I hate seeing these charges and don’t know why he can’t seem to remember I can see these charges. Also why can’t he just watch free porn? Is something special about only fans?

So asking men, am I overreacting? Should I confront this or leave it alone?

It makes me super insecure