How about a compromise. You join the armed forces and do an apprenticeship as a mechanic, electrician, baker, builder or plumber. You do 4 years and get a qualification. Then you do sniper training. You might even be able to do sniper training part time while you are doing your apprenticeship.
After you leave the armed forces, you will have a career to fall back onto, eg: mechanic, baker, etc.
If you only do sniper training you will limit your job prospects when you leave. But if you are a qualified mechanic or baker, etc, you can get a job anywhere in the world. Even if you don't want to do those jobs after you leave, you can still use those skills in every day life, (eg: to work on your car or to cook nice meals for your family).
After you leave the armed forces, you will have a career to fall back onto, eg: mechanic, baker, etc.
If you only do sniper training you will limit your job prospects when you leave. But if you are a qualified mechanic or baker, etc, you can get a job anywhere in the world. Even if you don't want to do those jobs after you leave, you can still use those skills in every day life, (eg: to work on your car or to cook nice meals for your family).