I understand the difficulty in always having to learn something new - but it's a reality.

I'm not saying that if you don't learn WPF you'll be out of work. But again, consider the statistics....avg turnover rate is less than 2 years...more and more "good developers" are being laid off....it is important, now more than ever, to manage one's career. And that includes keeping a very close eye on where development trends are going.