If both you and your wife are happy with your sex drive, don't worry about it.
Hi, there are ways to lower your sex drive,however I would not advise it.You more than likely have a high level of testosterone in your system.This is what is causing the sex drive.You being 38 years old I would not worry about it.After the age of 35 your testosterone level begins to slowly decline.After the age of about 45 you will tell some differance and after 50 you will tell a lot.You will wish as you get older you still had the same drive.Nature will take care of your level sooner than you wish. So enjoy it while it lasts,for more sooner than later it will be gone!Good luck,live happy.