I often get annoyed at the 50 minute limit because I always feel like its just not enough. I hate being cut off before I am ready to leave. On the flipside, I understand why this limit is there. I think someone may have mentioned in another thread about getting some of your needs met by T but within the context of the relationship for what it is. I think T puts that there to model that there are always limits to things. So, in a nutshell, like Sunrise just said, its the "frame". I often depise the "frame" lol, but gotta keep on truckin!