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I leave mine on all the time. It boots fast but my "environment" takes many minutes to start/setup. Sleep can be unreliable in terms of system/driver stability. I have blocked auto windows updates.
One thing to consider: With solid state electronics, statistically they generally only fail (without external factors like surges) being turned on or off from the mains. You notice when you switch it on and it doesn't.
Standby current in well designed devices is negligible - in the order of milliamps at 3.3v or 5v which equates to cents (or grams of CO2) per year at 240v. Sure some (few?) are not well designed but in all fairness without doing a proper power audit how would you really know? Switching everything off at the wall wont save you from lightning induced surges unless you unplug them. And for less severe stuff brownout/ESD protection is generally included in most things as it's commodity chips now days.
Taken in context with the on/off failure dilemma and you may well be doing more harm than good in the long run. This has been true for more than 20 years.
In 40 years of computers I've only lost 2 things to lightning. One 38k dialup modem and a 16 port ethernet switch that had a long outdoor run - that one blew the top off the main chip! In all that time, while others ran around like headless chooks when a storm was coming, I'd just ignore it and "carry on".
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