I am 35 and still have mine. The front two have emerged slightly and the back two are imapcted.
Of course, I avoided going tot he dentist for years, so my teeth are in pretty terrible condition. Last year, I started goign to the dentist and havign work done. No where in my dentist's plan for my mouth, is there any plan to remove my wisom teeth.
A number of years ago, I was going to a dentist who sent me to an oral surgeon to have teeth removed. At the time the OS recommended rmoving 8 of my teeth and my wisom teeth. My out of pocket cost, after insurance, would have been $800. Couldn't do it, so I cancelled.
My dentist's assistant has told me that it is good that I did not have them taken out. Due to decay I have lost two molars, and the assistant says that the front two wisdom teeth have are emerged are helping to take place of the missing molars, and helping me to chew my food. Without 'em, I'd probably choke.
Anyway, I have an appointment for more work on Monday.