Roger's Snail story

Roger's snail story from Training Day has got me thinking. I am not sure what it means, but I'll tell you what I think after.

The Story

At the end of this quote, Roger says "Figure that joke out and you'll figure the streets out."

One day this man walks out of his house to go to work. He sees this snail on his porch. So he picks it up and chucks it over his roof, into the back yard. Snail bounces off a rock, cracks its shell all to shit, and lands in the grass. Snail lies there dying

Roger checks his beeper

But it doesn't die. It eats some grass. Slowly heals. grows a new shell. And after a while it can crawl again. One day the snail up and heads back to the front of the house. Finally, after a year, the little guy crawls back on the porch. Right then, the man walks out to go to work and sees this snail again. So he says to it, "what the fuck's your problem?"

My interpretation:

Someone is going to hurt you. The reason why they will hurt you does not matter, just expect them to hurt you.

You will survive, and it will take time for you to heal.

But here is the kicker... Once you are healed, and you come back, don't expect the person that hurt you to care. They have moved on, and so should you.