To be fair, people will still be people… if the sludge/protein mash can be mildly upgraded to diversity/quality comparable to MREs (not that I’ve ever had one)

To be fair, people will still be people… if the sludge/protein mash can be mildly upgraded to diversity/quality comparable to MREs (not that I’ve ever had one) sure, but for long term space flight it seems plausible that the psychological/morale detriments of eating sludge every day (or any single meal for that matter) would be significant.