ds_snoopy,

Almost everyone on this board has more than one FF program membership and several elite memberships

I personally try to get a critical mass of elite programs that gives sufficient flexibility for last minute business travel to multiple destinations but avoid having too many where your privacy gets completely compromised and you reach a point of diminishing returns.

Loyalty rewards programs obviously go beyond dollars and sense and pull on emotional and psychological strings. I cannot rationally explain the addiction in changing a travel plan to achieve a FF goal that sometimes may cost direct revenue. Many of us here struggle to be savvy about balancing our normal travel with FF constraints!