Why don’t some married couples ever invite their parents on trips?

Lets say you are married (you dotn have kids with your husband as your husband alrayd have grown up kids from a previous marriage). You and your husband travel locally and overseas a bit often from many years you had done that. I have heard that some families where even married couples take into account and invite their parents or at least one of their parents to go travel with them (im not saying always but it happens), lets say is a bit of retirbution to raise you and take care of you. Why dont you do the same from tiem to time, to take your parents travel with you, right? I know a cousin of my mom and my sister mom who their children are like that. Even if my mom cousin and my mom sister kids have families on their own, and my aunt and my mom cousin are already senior people. Their kids always take them into account when they want to travel and they like their mom or both parents to be with them and enjoy also the time and the trip. Im not saying it happens all the time but it does happen with these relatives of me and my mom.

In the case of my sister, she had never ever had done that with mom or even when my dad was alive. Now that my mom is lets say jsut with me and my brother. My sister always show off and tell stories about her trips with her hubby but never in her life had told us she would like us to go with her, even if we can pay for our own accomodations. Not even had told my mom ever anything that why dont we go with her to relax on trips even locally, never ever that had happened.

Why don’t some married couples ever invite their parents on trips?
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