I normally wait 10 years before checking out a bottle of a good wine from a good vintage.
I’m not averse to a double decant and if the wine outlives me then my children, his grandchildren, can enjoy what’s left!
But this thread raises another interesting question - how long should we keep a wine before we drink it?
The French seem to drink their wine younger than we do. Not sure about other countries.
Is the best time to drink a wine subjective? Leave it too long and fruit gives way to secondary or tertiary flavours. Leave it even longer and you’ve five minutes to enjoy it before it fades.
I like drinking a wine at the beginning of its drinking window, opening a bottle, decant if necessary, and then seeing how it develops over the night. It’s always best at the end of the night!