With my back and overall aches and pains, I might as well be one of those 120 year old social security recipients.
Usually I try to stay well under 8 lbs, and my lighter guitars tend to get played more often. Sadly, this probably means I will never jive with a LP Custom. My lightest is a Pawn Shop Mustang (6 lbs 3 oz), with SGs and Reverend USAs not far behind. My heaviest are a Traditional 60s FSR Sherwood Jaguar (8 lbs 7.5 oz) and a Ric 4003 bass (9 lb 6.4 oz), which may be on the lighter end for that model.
I'm one of those annoying buyers who asks sellers for weights. Kind of nerdy, but I keep a spreadsheet of weight and several other measurements to help inform what I like or don't like about a guitar, and how it compares to others.