Glorify employment? The socioeconomic world is as good as it is because most people are employed, doing something which contributes to maintenance and advancement of society & technology. By glorifying unemployment, you're proposing removing the efforts which maintain our socioeconomic position & direction, soon leaving us with insufficient effort to even maintain a status quo.
"Well, in our country," said Alice, still panting a little, "you'd generally get to somewhere else — if you run very fast for a long time, as we've been doing." "A slow sort of country!" said the Queen. "Now, here, you see, it takes all the running you can do, to keep in the same place. If you want to get somewhere else, you must run at least twice as fast as that!" - Alice In Wonderland
The resources of which you speak are, on the whole, perishable consumables. Remember: any society is 3 food-sparse days from violent breakdown. We have to work hard to keep things as they are, and twice as hard to get to where we want to go. Cutting workforce in half means the remaining workers must work twice as hard just to keep everyone as they are, and four times harder if any real progress is desired. Universal basic income means those not earning it are supported by those who do - reducing the incentive to work at all. You say "*it must be possible to allocate resources..." - it isn't, short of incentivising tremendous work times high risk with expectations of huge payoff.