I first trialed it years ago but was unable to tell if it would be useful to me from the trial, and the price for the version I would use was quite steep for someone in my specific financial situation (serious gamedev with 6+ years experience but financially a hobbyist with low income and a hard limit on what I can earn (disability related)).
However after getting a significant hardware purchase refund, it was the day that Ludum Dare 54 was starting and I thought: "Lets go buy Spine no way this can go wrong..." I ended up getting the pro version.
And I was right, my experience with the software was amazing, I got going with the software within an hour of downloading it. It was simple to bring character designs I made in Affinity Designer into Spine with their JSON export, and it was simple to get animated characters out of it and into two game engines of my choice: starting off I used GameMaker, then 6 hours in switched the project over to Construct. Both engines had way simpler runtime implementations than anything else I have used for 2D skeletal animation.
In short I just wanted to say that I have already recommended Spine to multiple gamedev friends who are interested in 2D animation, and I will be continuing to work with the software myself, I am excited to dive into testing the 4.2 beta when it launches. I was a previous user of Creature2D, which now seems to have ceased development, and you seem to be resurrecting one of my favorite features of that software, and I am so excited to have gotten my Spine license at such a good time.
All I wished for previously was a little more granular pricing for folks who would be unsure the software is right for them, but after having used the software after buying it, price honestly seems more than fair and I would prefer Spine having a sustainable business model than being struggling to survive as a business.
Thank you for making such an awesome, accessible and easy to use piece of software, as a disabled person it's been one of the easiest to handle software packages I have ever used in creative media. I wish all the team the best, and for a bright future for Spine.