Don't buy toys - when you are sitting in the nursing home they'll be sod all use to you. Spend the cash on some great stalking experiences and then when you are sitting in your nursing home you'll have the memories of wonderful days on the hill. That will be worth a lot more than having a box with a fancy scope in it that was mostly a product of some marketing department rather than any actual need.
If you have a 6X42 then go stalking with it and ask yourself what a bigger scope might do for you even if it did give you an extra 10 minutes (and I have my doubts about that) as my experience with my 8X56 is that I usually decide that the shot is unwise in terms of ability to recover the animal etc. before my scope runs out of light to allow me to shoot. I'm mostly shooting sika deer in dark commercial forestry.