Regrets
I realized while strolling at lunchtime that I have never ridden in a limousine. It made me wonder what other fairly common things I have never experienced.

I have never...
...had a professional manicure
...drunk espresso
...owned a new car
...gone skinny dipping
...learned to speak a foreign language with some fluency
...lived alone for more than two months
...been drunk (I suspect this is no big loss)