Simply put, you don't need nails to play guitar. However, some classical and acoustic guitar player grows their nails to achieve more control, dynamics, and speed on the instrument.
Can you play guitar without nails?
Can you play classical guitar with no fingernails? Short answer: Yes, absolutely. No nails required.
Is it better to have nails when playing guitar?
Believe it or not, many guitarists prefer longer nails on their strumming hand. This makes it easier to play fingerstyle, especially on a classical guitar. Of course, you can pick nylon strings with the pads of your fingers. ... The most important thing is that your strings slide smoothly off your nails as you fingerpick.