I play next to my spouse who works nights, and who is usually asleep during the times that I play. I can't do voice chat because that would wake her up. However, any time I queue up for a dungeon with DF, I am being increasingly pressured by people to use a VoIP chat program.
The highest dungeon I have finished is Brayflox. I have noticed that dungeon difficulty is ramping up. My question is, is it possible to do late and endgame content without voice chat?
Yes I have never used it and am doing end game content. With that said, it makes things 100x easier if you do use voice-chat and I fully plan to once I find a decent FC.
Even if you go on just to *listen* that will help the rest of your team immensely, especially when you aren't familiar with the mechanics and/or haven't read up on the dungeon.
I will quote comedian Chris Rock and say this though:
"You can drive a car with your feet if you want to, but that doesn't make it a good f**king idea!"