It's supposed to be happy....right?

Well I attended my step sister's bridal shower last night. I wasn't going to...I really didn't want to go. It put me in the worst mood ever! I have lived the last 20 years (give or take) watching people catering to her every whim. I don't think that she cares or anything b/c at the drop of a hat...if she doesn't NEED you anymore then you are gone! I realize that I have put myself in the situation to have to be apart of all this...I could have and should have said no! I think that last night was just the icing on the cake for me! I'm seeing people that we work with taking their hard earned money and buying her things that I will promise you that in a years time...she will have no clue to where it is or who gave it to her in the 1st place! Everyone is just sitting around and worrying about if things look proper. I'm done at throwing money at her. I really think that I'm just done. I can't wait for her to get married and this to be over with. The way that I look at it now is that the sooner they get married if she wants and/or needs something....she had better look at her husband and not me!