I know this all too well!!
Me and the Mrs were planning the big white wedding. Found an amazing stately home with a chapel on site........invoices started racking up, venue costs alone were creeping over £25k even before flowers, dresses, wedding cars, honey moons, wedding cakes, etc etc etc. We were easily looking at circa £40k or so.
Then I had a big falling out with my Mother. Caused a massive amount of stress, her saying she wasn't going on my Wifes hen doo, wouldn't sit next to certain people at the wedding, telling other family members that I'd slagged them off so they wouldn't come, then she wasn't coming, then she was coming but was going to cause a fuss with family members who'd had a go at her for what she was doing etc etc.
You would not believe the stress. I'd booked a surprise trip to Vegas for five days, to see George Michael. A few days after revealing the surprise trip, the Mrs said "Shall we get married there!?!!?" So I thought, **** it!!, I'm not spending £40k on a single day for any single person to ruin it for me, even my mother.
So we cancelled the whole thing, much to my Wife's parents dismay and went from a wedding of 220 guests to just two; me and my Wife. No friends, no family, just us getting married in the little white chapel in Vegas.
After making the decision, three days before we left, we also found out that Laura was pregnant with our first child!!!
Best thing I ever did!