In this day and age of gaming the answer is you should and you will have a better overall experience. It allows for data sharing, comms, lfgs, and really skies the limit. As an example, In my community discord we schedule raids days out and have built libraries of walkthoughs, builds, and how to'd for those who arent as savy cab quickly look stuff up without having to filter through a million google searches. Plus it helps when we are all following the same procedures. It has been the standard for years for PC and both Microsoft and Sony of seen the light and have created links to through their own OS to enable players to utilize discord in their systems. With Crossplay being the norm now for almost all games you would be making the personnel choice to hinder yourself and making it unnecessarily difficult to connect as a team. Its super easy to set up on consoles and at this point in gaming anyone who plays multiplayer games should absolutely have one and be familizr with it.