We used field turf (rubber pellets/sand mix) back in high school and I can confirm it's much easier to fall on. Cleets had a tendency to get hung up occasionally, but this was nearly 20 years ago. I'm sure it's come a long way since then, and even then it was only a minor inconvenience, for the most part.
Well kept grass is great, but far too inconsistent, even at the pro level. I always preferred playing on grass, but only because it added different elements and senses to the game. The grit of dirt and mud on your hands and face. The smell of grass as you're pulling it out of your helmet. The stains on your uniform, adding a sort of primal element to the game. Even playing through mud on those extra rainy days, heightening the sense of that grind and adding to the feeling of victory after a hard fight. Pure bliss, imho.
That said, modern NFL is a massive cash cow and it makes sense for the owners to want to protect their investments. A few have held out and stuck with the fundamental spirit of the game, but it's hard to blame those that have made the switch.