Depends on the brand. I replaced one earlier this year after 18 years of use. Ours was Schlage.
Kwikset locks on the new house. I don't trust them. We sold them when I was working for the door company before seminary. Cheap crap then. Don't expect long service from them now.
The locks and keys we encountered in Europe seem far superior to what you can routinely get around here. 3D keys - rather than the contacts being in just a single plane like our common house keys there were cut-outs and pin holes over all surfaces of the keys. In Paris the keys even had differently shaped tips. I saw a video about "bump keys" for the locks commonly used in the US - the presenter was able to unlock a deadbolt after just about 5 minutes of being told how to do it, and of course the locksmith showing him could do it in about 5 seconds. No way the method they used in the video would have worked on the locks we saw in Europe...I'm seriously considering seeing if I can import some.