If I get breast implants, should I just assume that some day I will have a second operation just because of the implants?
Yes. If you assume that some day you will have another surgery just because of the implants, you wont be disappointed when it happens. It may be to go bigger, switch to silicone, shift one, replace a ruptured implant, or maybe a new implant becomes available that is better and more natural. Fortunately, your recovery from a second procedure tends to be very short (See question 17).