Flying pit-den this am. Get to my seat and it literally falls off when I sit down. I ask a FA about this. She says "well just don't move or sit forward at all; it is held by velcro. She takes the seat completely off and says "yeah, see, the velcro is completely worn off. I will have to write it up.". I said that I would like if she could please find me another seat. "No, you will be fine.". I just am astounded by the continual lack of service on this airline.