Benoit, you bring up something I've been mulling over lately and that is were the miles I used in first class upgrades really worth it.

Now that my biz travel is down and I'm not accumulating the way I once was I wish I had a few hundred thousand more miles in the bank.

OTOH I took my Mrs. LaGuardiaguy on UA IAD-MXP in first for our honeymoon and it was the most memorable flight we ever had.