Because you called yourself an avid and educated photographer (as I am also), yet post simple point and shoot examples that literally anyone with a camera could have done. I'm not saying instagram photos are cooler than yours, I am just saying your photos didn't exactly help your argument. I went to college for graphic design and photography, but I like instagram for some quick on the go photos to post. Instagram is not only for filters, it is also a social sub community of people that share photos. We are not all 14 year old girls posting OMG! stuff. Hope that helps a bit.
For example, I documented a big part of my Amsterdam trip through instagram. I posted a bunch of pictures of the Heineken factory and stuff like that as I was touring it. Not something I would have been able to do with a DSLR. It's like an online scrapbook. You aren't always going to have your nice camera with you.
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