It provides security to our devices in an efficient way; it also has its own desktop environment which makes things easy for us as administrators who are not familiar or comfortable with other OS's like windows etc.
There is nothing that I dislike about this product because everything works well so far. If you're looking for something secure then go ahead but if just want stability then there should be some alternatives available too instead of going for pureos only. We use PUREOES primarily due to its compatibility across platforms especially linux distributions since we need them all (windows being one).