I hear you, I was a bit hesitant myself, I'm not a huge fan of the wifi technology BS. I just like it because once I get it installed and programmed I can have it turn up the heat or down the AC from my phone when I leave work so that by the time I get home it'll be at the temp I like. Plus if I forget to readjust the thermostat after I leave I can check on it. Before this I just had a dummy digital thermostat, worked fine but for a rebate I'll take the upgrade. Nice to know that big brother can keep an eye on my house temp now

I always unplug my router, cable box, etc. when I'm out for the day. If I'm gone for a long weekend I also turn off my water valve and any extra lights I don't need. Call me cheap or paranoid but my gas and electric bills always beat the "efficient home" report they send out every month so I'll take it haha.
Those estimated readings are BS, I manually send in my meter readings for both gas and electric every month . Hell I work for the electric company and don't trust the dingbats to write down the correct numbers. One month my dad's electric bill was up a few hundred dollars, turns out the rounded to the wrong side of the dial and charged him an extra 1kw of electric.