hm... I'm probably not very mustachian... I have the "young" (well I'm 27 so I am fairly young lol) mentality of "spend". I'm just "mustachian" about saving too. It isn't that I don't spend at all, I just pick what I want to spend, and don't rack up a debt doing so, I don't buy on credit. I just don't keep working at it to save something, I'll do repair work as much as it functions like it should, but if it is dead, I buy a new one. Namely if my car needs more repairs than maintenance work or minor fixes, I'll do that. But if it needs more and I could get it "running" by duct taping it together, I'll just buy a new car. Sure, I could "save" some money by duct taping a car together, but I rather just buy one, is this bad? Probably, but I feel like it's an investment for future uses, so I'll buy it. I won't buy a new car (but I'm eyeballing some used subaru's around $20k and I just can't bite to buy :( even though I know I can technically afford it, I just really want to buy one at or under $15k).
Anyways, I feel like we can "spend" in an economy without buying on credit. There's no reason why I can't shop everyday without spending more than $40 per day. If I don't spend more than that, I save it $15k/year budget... but if I look at it as $40/day for everything (with a $600/month rent + utilities) that still leaves me with half the year to spend on whatever I want.
At least that's how I live, I spend around $20/day (the other $20 goes to rent/utilities). If I decide to spend half the day's money ($10) on food, that still leaves me $10 so I can watch a movie every day if I want, or go to a nice restaurant once a week for $70 meals. Of course, I make more than that with my job so I can actually afford more, but I end up saving/investing the rest. I just made $40/day my personal goal. I started at $50 and worked my way down, I just don't see myself going even lower right now.
I know my budget is a little over minimum wage, but I really don't think it's that bad. And I live pretty well, at least not paycheck to paycheck. Yes I know I don't really live paycheck to paycheck because I save 75% of my paycheck each month... But because I set my goal to $40/day, I'm able to get by at $15k/year. With big costs to car/house/items (I just pull from savings, nothing I can do about it, it's a "rainy day")
edit: just adding that my clothes/shoes/personal items/insurance/etc, come out of my savings, so that fudges my $40/day goal too, I just don't consider things that I don't have to pay daily for as part of the $40. Since those are either monthly/semi-annual/rare occasion, I throw them into the rainy day fund too lol. Yeah clothes shopping=rainy day