I want to but can/should I?

Hi everyone! I've been doing a deep dive and have been learning a lot about the reserves and all the benefits it offers. I'm located in Tucson and I've always had a call to serve and I was so close joining the army in my early 20s. Unfortunately that didn't workout but once I found out about the air reserve I have some hope that I will be able to do my part and serve my country.. I'm approaching the age of 36 (in the next 4 months) I work as a Pharmacy technician that works for the VA. I have a pretty cool schedule at the VA (7 ON - 7 OFF), I would like to expand my skills and education (finish a degree), my question to everyone is.... Would I have any potential draw backs if I commit? Will they even take an old man like me? How can I utilize my skills to serve?