Many seem to be talking about their last system .

You might change your mind later on, when your great-grandchildren tell you they would love to have a system like yours some day.

Just a thought.

Lot's of interesting comments; but, Three_Easy_Payments made me laugh the hardest, so thanks for that!

I bought my first serious audio system in the 1970's; and, I've done a major upgrade every decade since. I suspect my most recent upgrade will also be my last major upgrade. I'm hoping to avoid having to downsize to an integrated amp with bookshelf speakers after I retire.

What gives me hope is my most recent upgrades have been a quantum leap over my prior systems; so, technology is obviously marching forward. What worries me is that can't continue if the generations behind us don't  keep the hobby alive.

Generally speaking, behind us is a lost generation. The hope is for the next one after them.