Wi-Fi is everywhere these days, it seems, and that's a great bit of convenience. But as much as we may like free Wi-Fi when we go out and about, it's even more important to have a fast and reliable connection at home, where many of us do most of our personal computing, surfing and/or streaming.
Your router performance can depend on such things as bandwidth, number of antennae, and the location you set it in your home. This is why you need a good router, though finding one can be a chore because there are so many models available.