I guess I would be considered a "Hoarder" (CO: 1,300M +, UA 400M+, QF 350M+*, SPG 190M+, Hyatt 300M+ ), but not for the same reasons as others on FT. I value the perks that come with elite status--upgrades, better rooms/views, reservation availability, recognition etc) more than using points for trips/hotel. Thus I will always look to book the cheapest rate and when necessary use my points for an upgrade for hubby (keeping my fingers crossed for my own CO EUA ), or if I am at an expensive hotel for more than 1 night (my max is generally 3 nights at one hotel) I will pay for one night for the points/stay credit and use points for the other one or two. I am not particularily concerned about future devaluation as I don't see my 'spending' pattern changing much.
(*QF was acquired by moving SPG points to QF during a promo awhile back for BA/Concorde flight-- of which I did take 2 R/T, and thats my balance)