Can we revisit the subject of crowdfunding and subsequent behavior?

Friend of mine, one of best friends in the world, and known since 4th grade had a go fund me account started in late summer (early August) to adopt a baby.

They've tried for about 10 years, been through a lot, spent tens of thousands and now want to adopt. Ok.

Well today mrs chunky sees on the Facebook he and wife were tagged in Mexico at an all inclusive with a group, drinking and having a grand old time. By my count this is the 3rd vacation they've been on since asking for money. The other 2 were long weekend domestic trips.

They have about $10 K as of a few weeks ago, I donated a significant amount, and frankly I'm a bit offended and very surprised. My friend has never been one to ask for anything. I've largely given up on the goodness of the human spirit but this hits a nerve. It just seems like once you ask for money and receive it, you're behavior needs to change if you want credibility and respect.

Maybe that's not fair to judge them negatively, but they're blowing and going like any other 2 income couple in early 30s, but I find the eating out, concerts, sporting events, new kegerators, and vacations to be annoying after I've helped to fund it--all of which are well documented by the wife on social media. Well, except the vacations. Those are interestingly left off by her, but every happy hour is documented which makes it feel all the more calculating.

I'm conflicted to a point. Certainly they didn't technically do anything wrong and I don't expect them to abstain from living, but my gut reaction looks at a Mayan Riviera vacation (cost likely being 30-40% of what the received from GoFundme) as a bit insulting to those who gave.

Anyone have similar experience in the sense that you've changed your opinions of long time friends by crowd sourcing?