Some people don't want to use email. Not a problem. Don't want to? Don't.
BUT.....if you start using it and you send people your email address and you send even the occasional email to your friends and relatives you are then obligated by the rules of common courtesy to keep using it until you notify them that you are stopping.
Why? Because if you don't, how are your friends supposed to know that you never got the emails they sent you? Huh? Ever thought of that?
If I sound peevish it's because I am. Somebody just did it to me again. Here's the problem:
She sent me an email late on Tuesday asking if I was going to be available for lunch Friday. I didn't see it until I got up Wednesday, but I answered it right away. Then... nothing. Not a peep.
Then Friday morning I got a phone call complaining that she never heard from me. When I mentioned that I'd replied to her email she said, "Oh, I don't check my email very often." Are you kidding me? You emailed me first! That's like asking a question and then turning your back and sticking your fingers in your ears.
If you start a conversation using one method, whether it's email or texting, you need to continue it using the same technology. By the same token it is not ok to reply to an email with a text message. You're just asking for trouble. And confusion.
I have a bigger issue with people who just never check their email regularly. As I said, if you don't want to use email that's fine. Don't use it. But you can't just use it when it suits you and then ignore it when it doesn't. Because people won't know that you don't check it, and they'll send you emails that they think you're reading. And they're expecting you to answer.