Have I been wrong all these years?

One view: link. It's been around since (at least) the '40s, so I wouldn't call it recent.

Am I just a pedantic old fuddy-duddy who needs to learn to accept the adoption of what were sloppy mistakes into acceptable speech?

Not sure, you'll have to post more before I can tell for sure. wink But seriously, that's pretty much how language changes, and there's not much folks can do about it. This is one of the reasons why we cannot today read Beowulf without special study. About all you can do is try to use the word in the way you think is proper, and ignore those whose usage you think is improper. (If you can understand them to correct them, where's the harm in their solecism?) Myself, I have stopped trying to point out to people why I think it's funny when they say, "To air is human", rather than 'To err is human", or stick a jarring t into the pronunciation of often.

Ceci n'est pas un seing.