It would make a good child's poem, to say the least, what with a nice little rhyme and a hiding meter in there. I feel like there's a juvenile sentiment deep in the poem, not an innocent type though. A naive view, a antsy perspective on being miserable and affected by life, by being held down by the gravity and reality of life and the loss of innocence. Yet you still imagine or reminisce on what used to be, what could be happiness, what could be there for you to embrace. Glued to your chair.
Children usually feel sadness when they first realize that they are mortal and will not live forever. The first people they usually think about dying are their parents. For the obvious reasons. Some children will think that their toys will die. They don't really absorb that they're also mortal and will die. It's never something fully absorbed either because there is still the fear of death, pretty much innate in every human being- hence why we live to distract ourselves. But this poem really tunes into that tiny mind space where they imagine these things. Squared. Small. A narrow frame of mind.
Yay something significantly longer than three lines. Your first stanza is quite funny really (as in funny HAHA) and if I may express it in almost childlike wonder, unable to feel how it is to fly because of a happy random force called Gravity. The second stanza appears more mature, and since we're sitting on a chair unable to fly we must wonder about death? Hmm why is this person feeling pain and the need to cry suddenly (apart from rhyming purposes) May I ask and wonder why? Cheers Azuire