ah, you changed your avatar! I didn't look at the name before reading the post, was agreeing with most of what you wrote until the purchase shaming part. Just can't get behind the need to shame each other into compliance. But otherwise,
It's all about goals. While the $5 latte doesn't seem like a lot at the moment, those add up. But if you keep in mind the larger goal and prioritize accordingly, things tend to work out better. I do spend money on an expensive hobby but that hobby could be a LOT more expensive if I let it be and prioritized the wants for the hobby over the wants of the family. She spends some money on lunch once a week with our 5yo this year before he goes to school, she buys clothes for our future daughter but she's smart about it. Literally, she'll buy clothing for a few dollars that she sells for more after our kids wear it for a year or so.
It certainly helps that we haven't developed expensive tastes, she doesn't drink alcohol so my consumption is mostly limited to the occasional get together with the guys and a beer or cocktail at home - it's amazing how much most people spend on alcohol and how much more people spend after consuming. We don't buy art or the newest electronics, but we do pay for the annual vacation, lunch after church every week, taking the kids places every so often, but we have developed the habit of considering the cost (but not dwelling on it for stuff we find worthwhile). That's probably the biggest thing: develop the muscle memory to impulsively think "do I really need X or is that money better off invested or spent on something else." Budgeting helps force you to do that, as Dave says "spend intentionally".
As to the "growth of net worth" being the utmost goal; it might work for you but it won't for many. It means a lot more to me to consider the
ultimate goal of that net worth - freedom to retire, travel, buy a beach house (that's our utmost goal right now), or whatever you want to do with the money. Not the money itself. But whatever works for you.