I can chromecast youtube to my TV already. I have firetv dongle(two of them) that can run youtube too. Roku is also pretty popular in this space. Some also u

I can chromecast youtube to my TV already. I have firetv dongle(two of them) that can run youtube too. Roku is also pretty popular in this space. Some also uses apple tv(not an Apple fan here) what google tv buy me? what's its unique selling point? that was not very clear to me.