Yes. I think our natural state is to be connected with each other, and it does take effort to cut oneself off. Your poem illustrates the effort, and partially identifies the motivation for building a wall. The rhyme works very well, in that it does not intrude or distract from the reading; I did not find one example of it being forced. And I like how you 'pack' the revelation of why this person is building a wall, what all the effort is for, into the very last line. Good job!
Thank you, I really appreciate this feedback, and your read on the poem. Actually you got a layer from it that I had not consciously realized, the effort expended on this isolation. What a sweeping read you made, wow! :) I have a bit of a formal structure bent to me so I am relieved the rhyme was not too intrusive. Thanks again!!