Two part answer.
I certainly have faith in a design that's been around and refined for over 42 years, so long term repairs are not a concern to me. Should something come up the odds are the cost of repair will be equal to or close to any extended plan I might purchase.
Secondly, again speaking for me only, I've never been an advocate of any extended warranty because warranty language of any kind is carefully crafted to protect the vendor or manufacturer, not the purchaser.
They do provide peace of mind in many cases but insurance companies don't build wealth by paying out claims.
On the topic of peace of mind, the F6B GL1800 platform has definitely provided that to me on countless rides.
Welcome to the B hive!