I had some crocs for a time and they are just a firm foam clog. they are comfortable but i never felt that they were so comfortable to rave about.
perfect for the summer and walking about. great for the garden as well. Just do not leave them in the sun. learning from experience they shrink, curl up, and become unusable.
i don’t really like that original croc look, but i think at the moment it is a popular one to choose. i prefer their other styles.
overall
a pretty cheap shoe option
moderately comfy in my opinion
easy to clean, just hose them down
comes in a variety of colors
i don’t have really specific reasons to not get them other than preference of look/style.