What's the point of living on?

What’s the point of living on?
Forty years, nothing have I won.
A life filled with crack and booze,
Since my twentieth year, perpetual blues.
Sometimes I wonder,
If I had not made that blunder,
To run away from home,
Across the world I did roam.
Searching for my self, searching for my intention,
Finally I could not keep up my abstention.
Life then spiraled down from there,
I robbed the houses of the fair.
With the money I bought drugs,
Got high with my new friends, the thugs.
Just living life for getting high,
At last I ran out of supply.
As I thought of my next con,
What’s the point of living on?