You might want to start with some glider flying, just to see what that is like. It is not as expensive as powered flight and many people really enjoy it.
No one knows right now what the next few years will be like in aviation but every year there are people who reach retirement age who must be replaced. The big question is whether there is a pool of people already qualified or whether new entrants can also find work.
My experience of aviation has been that people who really want to work in aviation always seem to find jobs. Notice that I didn't just write that everyone who wants to fly will find a job!