I want to know what your favourite platform is and why?

Mine personally is Instagram, it's an excellent platform with so many amazing features.
I think it has a really easy interface and is very user friendly! 

There is so much you can do on the platform, whether its building a business  following or just for fun!

I currently run on three different accounts for the various things I'm involved with, I wanted to have my personal and 'business  life' separate! 

So now its over to you, I want to know what is your favourite and why?!