Can't stand the thought of sticking my finger near my eye with it open.. Just a mental roadblock.
Everyone is like that at first. I had an eye proximity reflex like you wouldn't believe! You just have to decide that's it's worth some effort. For the first month it would literally take 1 and a half hours to get both of them into my eyes, then by a couple of months I had it down to 45 minutes, then by 6 months it was 10 minutes. If I can overcome my eye proximity aversion, then anyone can.