Yes, "long dead before we break even" is THE most important consideration. NOT.
If I read this one more time I'm going to blow a gasket. Heaven forbid anyone spend a few extra dollars to help ensure a livable planet for generations to come . . . .
Look, I get it: PV, and even the Tesla Solar Roof can be "spendy." Do it anyway: If you're here reading this forum, you likely have the money. Have you ever seen a hearse with a U-Haul trailer in tow? Not me.
Do the right thing: Spend the money; help leave a useable planet for others. If you don't understand the risk we, collectively, pose to our lifeboat in the solar system with unchecked GHG dumping, please review "Positive Feedback Loops" and watch this gif:
www.usgs.gov
(And I'm speaking as someone that dropped nearly $30k to replace two perfectly functional methane furnaces with SEER 24-ish heat pumps, and had the methane/gas company come and remove their damn meter from our house. It's the First Rule of Holes: When you're in one, STOP DIGGING.)
"Every time you spend money, you're casting a vote for the kind of world you want.”
― Anna Lappe
(So please, EVERYONE, stop sending money to your local fossil fuel company, stat.)