I like it OK as a song. It's not spectacular, but it's adequate, and "adequate" is a modestly high bar from me. It wouldn't stand up to being elaborated on much more than it is, but there's a place for such simplicity.

However, philosophically, the lyrics of the song boils down to "What if we could all just get along?", which is an even weaker message than "Why can't we all just get along?", which is already a sentiment so childish that I never deploy it as anything other than an example of something so hopelessly naive that it can't be taken seriously by any adult.