I have taken turmeric supplements in the past, but always with piperine (extracted from black pepper). You can buy turmeric with piperine, and I buy the co-supplement because my naturopath recommended it at the time. The explanation I got was that turmeric doesn't necessarily always absorb in the GI tract, but a study that was done indicated that turmeric's absorbency increased significantly with piperine. My naturopath said that although the study seemed to be sound, for the sake of full disclosure, he said it was funded by a company that produces piperine.
When I can't afford the co-supplements, I take the turmeric supplement and drink Japanese green tea at around the same time. It is also said to increase how well turmeric absorbs in the gut.
I also eat curries at least three times a week! I can do the spices---I just can't add chilli's to my curries as much as I'd like.