Does anyone write cards or letters anymore?

My inventory for Christmas is nowhere near where it should be. After I paint the original watercolors, I send the .jpegs to a printer for reproductions into 5" x 7" tropical greeting cards. Going a step further, each one can also be framed.

Which makes me wonder about my marketing strategy. Does anyone write cards or letters anymore? My originals are usually reproduced into giclee prints-museum quality and archival prints made to last 107 years. (Don't ask why 107.) Since they are expensive, I decided to print a line of greeting cards to capture the low end purchases. That was in April of this year.

At the time, I was just concerned about the price tag, not about the future of greeting cards. Now I am curious.

What do you think? Are greeting cards like books? Will the popularity of greeting cards dwindle like calligraphy and long handwriting? Will ecards take the place of handheld greeting cards?