I remember those mixed up feelings of the quarter-life crisis. People don't talk about it, but it happens.
I have to assure you that life in your 30's is good. In fact, I was pretty excited about turning 30 and looked forward to it. Why? Because my 20's were such an up-and-down emotional roller coaster. Too much time spent with the wrong guys in the wrong jobs. I know myself better now. I'm secure in myself, my career, my decisions, my marriage. And like MrsMcCartney, we still have a lot of fun (and more money to have fun with)!
And I'm still hot...
Re: the shower thing: Some people like them, some don't. It's great to get gifts, but you also have to come up with a positive reaction for every gift you receive. Harder than you think it will be. ("Thank you for the 24 sets of plastic corn cob holders! I didn't realize they came in avacado. What a fantastic color)
Personally, I am not the type of person to get excited over dishtowels - you might not be either. My china, however, is fucking AWESOME!!!!!