I honestly think using a paper checklist every time for a simple aircraft like a warrior, arrow or whatever can be a dangerous crutch (in some circumstances). Its good for newer pilots or on your checkride, or on an unfamiliar airplane. But I think its more prudent to develop a flow or other memorized checklist (CIGAR, GUMPS, whatever) that you can do in your head and quickly. I think these methods also enhance the muscle memory associated with doing a checklist, which lowers the brain power required to complete the checklist and at the same time decreases the possibility of error. Complex, two pilot aircraft are an exception.
I have been flying a few times with a friend who does the paper checklist thing. The first time I went flying with him and he whips out the checklist in a cessna that I know he is very familiar with, and painstakingly reads and does everything. We fly to our destination and on downwind he does the paper checklist thing. I think "well, he spent an awful lot of time looking down at that checklist (and not out the window while in the pattern in MVFR conditions) but at least he won't miss anything"
Fast forward a few months. He is nearing 30 hours into his instrument training, and I have flown safety pilot for him several times. He's pretty good at understanding the approach plate, working with navaids, talking on the radio, and flying by ref to instruments. What's the biggest and most dangerous error i've seen him make? Checklist. When he's busy with all of the IFR stuff, he either forgets the before landing checklist entirely, or tries to do it half assed from memory and forgets something. probably 5 out of the last 7 approaches he's forgotten the carb heat.. very dangerous mistake when in the clouds with all that moisture...
What if you're a paper checklist guy and you're flying an approach in IMC and turbulence, and your eyes skip over a line? How about if that checklist decides to fall out of your lap and gets stuck under your seat while downwind in the pattern with a bunch of traffic?