I use lightbox on my own site, but I've been thinking about getting rid of there too. It makes for a nice, professional look and once in a lightbox you can scroll through all the images on the page. But like everyone else here, I usually just open the image in a new tab so I can see the details. Plus, I suspect some readers don't realize they can get a better resolution by opening in a new tab, so when they see a large image in a lightbox they just think it's a poor resolution and move on.