I've lived long enough now to see what happened to colour prints made in the 1950s - so I do believe in longevity. Printing is a lot of work, and if we think it may be of interest to our survivors, even within the limits of the family, printing with materials that have reasonably good archival properties remains important, at least to me, and I would expect to others as well. One can't predict at what stage in one's life it becomes important or interesting to look back, and when doing so, one wants to look back at something that has well survived the decades.I don't think this "longevity trough" is forever - there will come a time when enough people wake-up to value what they valued at the outset of this digital revolution, and then the services dealing in print longevity will see more business and be better positioned to look at different financial models from those prevailing now.