I think pictures will help others to understand the questions and also help the askers to get the answer.
How do you think about it?
You asked " how " do I think about it . I think about it by using my brain ..my mind.
What do I think about it ? I think a picture is worth a thousand words.
Part of the point of a language learning site is to express yourself in words. Pictures would detract from this and I feel that if you want to put up pictures, there are many other sites that you can put up pictures.
It would be nice. But it's a very big site, with tons of members. So adding the capability to paste pictures would increase the storage requirements. It would also require further moderation.