Most Hormone Replacement Therapy (HRT) calls for only one shot of testosterone per week or once every other week. I'd rather take the shots than go through surgery to insert something that has to ripped out and changed every 10 years.

One of my friends used to quote his Yale professor: "There's no condition that surgery can't make worse."

Why undergo surgery and possible complications when you can just stick yourself relatively painlessly weekly or bi-weekly.