why people feel " shame " for having BP or needing to go IP ..I just don't understand this.

I have been IP many times and felt no shame at all.
I choose not to tell the world about my BP but I also did not choose to tell the world I had cancer ...
As far as Shame for going IP ??? Should someone feel shame for going to the local hospital for any other illness ? or surgery? I think not.
I dont mean to be rude but I just dont get it.