I mis-read the question. I thought you were asking who has been programming for 30 years, not who was older than 30.

I'm 52 and have been at it professionally for 27 years. I still think it's the best job for me.

Advice to those without that many years: The temptation to go into management will periodically arise. Advice I got once: "In management, they nip at you from the top and they nip at you from the bottom." Meaning that in programming, you only have to please those above you on the ladder. When you're in management, you have to please those above you AND those below you.