It's already been mentioned on this thread, and I've previously touched on it: aside from the lack of relevant qualifications offered by the majority of airline pilots, perhaps the biggest issue we're going to face is the perception that we'll be off as soon as a flying job turns up. This will prove to be an insurmountable obstacle for those without the means to demonstrate significant commitment to a new career path.
Personally, I'm not bothered about flying per se, but it's the only thing I'm realistically qualified to do without an expensive refresh of my prior qualifications. I was looking for a new career even before the current crisis, and it really isn't as simple to find something else as some on here seem to believe it is, especially if you expect a salary that's even an appreciable fraction of what you currently earn.