hell yeah I have gone on trips with friends and we tallied up and split the expenses evenly.
Good for you. But if a houseguest of mine insisted on paying me for my hospitality I’d consider it an insult.
What tacky friends you have. When I invite people to come and stay with me, I pay, when they invite me to go stay with them, they pay. I guess you can’t help your world view since you have such classless friends.