At the end of the day, it all boils down to personal preference. Some climbers simply hate that the tips of their fingers are covered by bulky materials. If you want to tie a good knot, use your phone, or fish anything out of your pockets, you are going to have to take your gloves off to do so. The fingerless option lets you take on tedious tasks without having to take off your gear. However, this advantage comes at a risk- and that is that your fingers are not protected.