Clutch bite point is very much an individual issue.....some people swear that it should be approximately 1/2 way between floor and full travel, others lower down and so on and so forth etc.....Your driving style will have an effect too....
Do you rest your foot on the clutch? If you do there's pressure of some kind on it and it WILL wear more quickly, possibly imperceptibly but more quickly all the same and over a lot of miles it'll build....and don't believe the BS from some people that it won't !!