My experience and history...... I've been playing music 30 years, classical guitar 23 years, and have been using acrylic nails for 13 years, since 2004. I actually met my wife a the nail shop she owned
Nails have been a love/hate relationship and the acrylic nails were wonderful in the years I stopped playing classical (from 2001 to 2014, I got out of school in 1999). My career-professional-money-making-playing lead me to play differently and a tad less disciplined than my classical years (<<< in a good and wonderful way), but in the recent years, classical guitar playing has become more lucrative so I've gotten back into it.
When I stopped playing classical in 2004, I sold my 1986 David Daly (<<< I could still kick myself) and started playing stage guitars (my Cordoba FCWE, and eventually RCWE's) through AER amps. The acrylics were great and provided great stability in my career that I DIDN'T have in my classical-regular-nail years. When I went back to play classical on my Cordobas, I missed the resonance needed from a fill-size classicals. I bought one, and now I've been having to experiment with (correct/better/more regular) nails shapes. Acrylic nails solved my durability problems in my post-classical playing years and gave me great confidence in my playing which I DIDN'T have before.
Coming back to classical playing, I'm able to play pieces that always gave me problems. BUT, I've run into problems. With acrylics, you "play through" the strings much differently and the amount of time I need to practice has lead to my nails, particularly UNDERNEATH my nails having to develop durability to the intense playing.
One thing my wife has educated me over the years is not JUST the nails, but the Hyponychium <<< the skin under the nail that on some people (me included) is very sensitive and how, folks like me, need to manage that Hyponychium-Skin. In my case I need to constantly carve & push down my Hyponychium so that it doesn't interfere with how I play.
PLEASE NOTE, that carving & pushing down your Hyponychium must done AFTER you shower when you skin in naturally flexible and, of course, use lotion to help the process. Nails (and posture/sitting-correctly-to-your-body-type, etc) in classical guitar playing has been a subject that has caused many to give up and to just accept the "just becauses" of life BS. Everyone is different. If you love your playing and art and have the desire, you'll find your way and obviously we all love it enough to be here!
BTW, I've tried the "no-nail" route.... CAN'T DO IT! Nails is it.....
My wife and I are going to experiment with gel nails & silk wraps while we're on vacation. We'll report back with the comfort/playability & durability aspect. It's a pleasure to be posting with you all!