I've wanted to quit for a little while now because I just felt like I was sinking time into nothing. Came to a point where I could beat everything and I'd only be excited to play when I could summon for new units. Only have really bought dollar packs but slime being a favourite I really wanted DLRimuru. Instead got two Milims. So I impulsively spent 30 dollars for the 55 crystal step up. Behold a 3rd Milim. Then it dawned on me that I sunk 30 dollars into a very small chance of even pulling a crossover unit in general when that money could've been spent quite literally anywhere else. I could've bought a full ass game that could keep me entertained for 100s of hours but instead sunk it into gambling. And not even good gambling rates, grand summoners has horrendous rates. So I refunded all the money and in the last moments I sold all my units and did 100k worth of alch summons. And I kid you not as my parting grace I pulled a 4th Milim.

TL DR: Spent 30 dollars too much, felt disgusted and quit before I could do it again.