I don't send local cards, so the people I send to are people that live far away and I want to keep in touch with them. Although if I were stressed I would send them at a different time of year, I don't think I could skip a year unless something was really wrong. I know I worry when I don't hear from certain people, I wouldn't want people worrying about me. I think e-mail is another great option. For me, it is about staying in touch - not about sending cards. I just find cards an easy way to do that.
I haven't done mine yet, but I've bought the cards, had a picture copied of the boys, and written up a letter. All I have to do is address envelopes and write short personal notes. It should take me about two hours to do 35. I'll wait until we've got the tree up, put my jammies on and some Christmas carols on the stereo. Sometimes I do them during the 12 days of Christmas when things have settled down a bit.
I simplify in other ways, but I look forward to hearing from people at Christmas so that's one I won't give up. If I was sending to people I'd see anyway, I'd give it up in an instant.