as do I - it's wonderful, and if you ever had electronics die after warranty ends (within 3 years) they have an amazing program to make you whole within minutes, no hassle, no costs... I would fight for my AmEx!
I've found Amex's concierge to be okay and their travel product prices to be absurdly high. The only reason I keep my Platinum card is because I get $200 in Southwest gift cards each year with their airline reimbursement, and they reimburse me occasionally for my Global Entry membership renewal.