I think the recognition and respect of basic human drives is absolutely essential for mental/emotional health, but the fulfillment is not essential if it does not directly preserve life. I wrote a story about this concerning repression. If you are interested here is a link. https://busy.org/@giddyupngo/short-story-13-horses-part-1
The 2nd part is here.https://busy.org/@giddyupngo/short-story-13-horses-explanation-part-2
I have never read any of Beckett, though I have heard of him. Thanks for expanding my literary horizons. :-)