I never really noticed the weight. I used to be young, agile and mostly un-injured. I used to jump about with whatever bass was strapped on.
As time has gone on I picked up a nasty neck injury playing 5 a side footy. I had physio but then had a car accident, where I was hit from behind by a lorry, which then hit me again.
I now have a c4-c6 vertibrae problem, which I manage ok with. From time to time it's back to the physio.
I stopped gigging heavily about 2 years ago but now I only aim to do about 40 per year.
Most of my gigs are 80s duo. I play a lightweight Strat on about half the gig, so only about an hour. It doesnt affect my neck
but when I do a Police tribute gig, it all locks up for a few days. I use my Bravewood Sting replica, it is nice n light but still gives me grief. I don't know the exact weight but it feels light.
I am starting to shed my heavier basses because they should be played, not left in their cases in the cupboard