I swapped to smart meters about three years ago. The first revisions couldn't have the smart function transferred between providers which made them pointless, so I waited for version 2 ( possibly just firmware).
I was given the little tracker thing you can install and have on your kitchen side board or something but I binned it as they are cheap and crap and just continued with my life as normal.
I now don't ever have to provide meter readings, and if I am interested in my energy usage I can use the British Gas app and see my monthly, weekly and daily usage stats for gas and electricity.
I cannot see any reason not to have one, unless you're a conspiracy plonker. Nothing has changed, my life continues as normal, and if on the off chance I do want to check usage, such as after a day of having everything on, I can.
