I thoroughly enjoyed this as a whole. You give a constant feeling of sad longing for something since passed, which I applaud you for. This was not cliché or overdone by any means.
Your final few lines were very simple, and I loved them. Saying that you find wealth in someone (assumably love, joy, life) and yet still being the poorest soul to roam the earth is wonderful imagery.
I love your originality in delivering a feeling most peplor have in common at one point or another in their lives.
This was written very well. The only thing I can find that threw it off is line 12.
"The tears, like rain, falling on the floor."
I think it kind of throws the flow off. If I may...?
The tears falling like rain"
It's only a suggestion and the only one. Other than that minor tweak, it was fantastic. I loved it. I hope I did not offend you.
Keep up the awesome work, and I'll keep reading