You did a lot at the weekend.
Eating out has become your normal but it IS a treat and a day out, regardless of where you go. Going to swimming lessons then eating out would definitely be considered a day out by my kids for example.
You were exhausted after a long week, we're all exhausted after a long week and it's be really easy if you have a very high income to just eat out for every meal. But that's the answer to your question, you mindlessly are out and at no point considered the expense and thought, dyou know I could make bacon rolls at home for fiber and have decent caffetiere coffee.
Which is fine. It's all fine and choices and based on I come but you genuinely seem surprised you spent so much money. You spent that money on luxuries. You have choices. Spend the money and accept it's a luxury rather than moaning about it (I have weekends like this and I genuinely think, 'Iam so lucky I can afford to take my kids to a decent softplay that does good coffee and get m us lunch out so they are excercised instead of wrecking my house and I can read my kindle for an hour'
Alternatively I also have weekends where I pack picnics before we leave the house, I make plans around popping home to make the kids a sandwich lunch between Saturday club and trips to the park or whatever rather than pay a fortune for a cheese toastie in a cafe.
You seem to think you've not real control over what you've spent or that you've done nothing at all. Doing nothing properly for a weekend for us would involve taking the kids to their pre paid sports clubs, eating all meals at home and entertainment being dog walks, local playpark, crafts in the house etc. sometimes if we'd had a weekend like that then on the Sunday night we'll actively realize we've not spent much and we can not bother to make dinner and instead order a takeaway. I'd feel a bit rubbish if I ate out as much as you have and spend as much and not really feeling anyone has benefitted but I wouldn't wonder how it's happened I'd think about whether I wanted to change it.
It's possible to have a busy week and be exhausted and still cook etc at weekends many people have hugely demanding jobs that don't pay well and no option but to still feed themselves at the weekend. You are very lucky. That's the bit you're maybe missing