I can live on 30K a month with few problems. As someone else said <10K rent (all in) my food budget (I cook and eat well) is <8K. That leaves nearly 12K a month of play money (yeah, clothes, shoes come out of that too) but I find that's enough.
I have a motorbike to get around and I go out whenever I feel like it. I did make one big move and that was, for all intents and purposes, quit the bar scene (maybe twice a month now, 2-3 beers and outta there) which saves about 8K a month, I haven't been an 'at home' drinker for many, many years. No interest in sitting alone at home getting drunk, so no issues there.
Then they legalized weed...damn...
*checks budget...