Just to add to what others have said (because they are all right):
1. The backlog at ATP standardizations is 8 months and growing. CFIs aren't leaving because there are 5-10 at each location, some aren't flying much, some are flying 60 hours a month, but they all start instructing at 250 hours and have to get to 1,500, if jobs are available then, which they probably won't be.
2. The country is steadily running out of instructing jobs. There already weren't that many jobs instructing anyway, and now there's no growth out.
3. There won't be a pilot shortage any time soon for many reasons.
4. If you want to be a pilot, jump in. The water's frigid. I'm here because I love it. I'd still be here if the water got even more cold. It's what I've always wanted to do and always will as long as I can. Just don't do this because it seems like something to do or you think you might make some decent money at it.