Originally Posted by
Kahrpistols
There's a reason why all cars now have disc brakes - they're the most reliable brakes in all conditions. I just switched to disc from rim a month ago and I was flabbergasted at the braking power when wet. To me that's their greatest advantage over rim brakes, although the other arguments are fairly convincing too (no need to destroy your rims).
The cost of replacing rims is far less expensive than replacing the entire bicycle, which is what you'll have to do if you want to "upgrade" to hydraulics when you have a frame and fork equipped with rim brake bosses. Road bikes with hydraulics start at around $2K to 2.5K.