I don't mind it when people vent to me as well since it does imply trust which is good. I also hate birthday celebrations at work too because I don't like the attention and it's just an excuse to pig out on food. I know it has good intentions but I'm just not that big on celebrations and in a lot of cases those celebrations seem rather forced as well. I'd much rather treat my birthday as any other day since it's really nothing special for me and don't get into all the hype.