Have you noticed

Nobody is forcing anyone to contribute so what's the problem?

Giving is giving, and if someone thinks a 'cause' worth donating to then that's their own decision.

I also find it an odd concept. Is it relatively new?
I think the first time I heard of it was a thread on GN about a family wanting an alternative lifestyle. I think they had raised a few hundred pounds instead of the tens of thousands they were hoping to get.

I could not agree more.

A few years ago there was a mini whirlwind or whatever hitting a couple of streets so very localised. Some houses were uninhabitable and the house and contents of many were uninsured- why? I insure my property, why should I be paying for others who chose to spend that money in other ways.

Hear, hear.
But at least we are still at liberty to form our own opinion as to whether the project is worthwhile or not and if we so choose, ignore this internet equivalent of begging letters.