I do this for myself, in my own house. Because I dont need people like you, I can figure this stuff out all on my own. Its not hard. After troubleshooting complex weapons systems for over 30 years, making a small network isnt hard, you're right. Could go wireless, and most of the house is served just fine for light surfing that way. But in a house like this, I am stuck with repeaters for the far crivers, and if I wanted to offer an optimum connection, say for gaming or streaming high def, then wired is the way to go. I use powerline networking for the son and the livingroom for me and Netflix and such. I can route and terminate Cat5e sufficient for my needs. So no, you dont need me, and no, I dont need you. Anymore than I neeeded the asshats from Metrocast who raked me over the coals for four hours just to prove a point. Even removed perfectly good connections and lied to my face about why.
Simply because I told them they didnt need to perform the $70 service call, it all worked fine. IF you want that whole story, let me know, I wrote a version up when it happened.