I am all for chasing dreams and living outside society's norms, but what kind of parents let their 25 year old freeload off them like this? Don't get me wrong, I would always step in to help if my kid is truly in need, but my kid is going to have to fend for himself in the world.
I really question your motivation if you couldn't figure out how to train your ass off and work 45 hr/wk at the same time. Is this about running, or is this about you wanting to completely shirk any responsibility to provide for yourself?
Here's an idea: Find 3-4 like-minded runners. Rent some craphole apartment. Share rooms to make it cheaper. Work part time jobs. Focus on training as hard (but smart) as you can and on spending as little money as possible. Consider doing this somewhere where the cost of living is cheaper, as rent will be your primary outlay. This gives you training partners, a support group, and a greater sense of purpose than you would have spending your time surfing the internet in your parents basement.
You don't need a 9-5 job to survive, but it's time to man up and take responsibility for yourself. I don't know what your eventual career goals are, but a prospective employer is going to want to know what you did in the gap. If you go with my suggestion, you have an impressive story that shows grit and determination. If you just live in your parents basement, you sound pathetic.
And if this post was just a trolling attempt, kudos.