I have had my implants since 1993 and they are still going strong. Best investment in my looks and I have never regretted getting them. I had two children before I had the surgery and would recommend younger women wait until they have had their kids to get them. I always wanted bigger breasts (original breasts were 32B) and after breast feeding both my kids for the best part of three years (they were born pretty close together) I was not very pert anymore.
The implants gave me my confidence back and a nice set of 34C's. Big enough to look good and balanced on my body but not too big to look silly. In fact most people I know still don't know that I have had the operation done!