In my opinion, raster graphics (GIF, PNG) is used much more that vector graphics on the web. I am wondering why? Wouldn't vector graphics be more suitable for web pages design (i.e. buttons design, custom borders etc.)?
One answer which I have found, is that browsers support PNG and GIF more widely than, for example SVG. But again a question arises - why do browsers support raster graphics better? What are the reasons for it?
Currently, vector graphics is not usually considered when designing a website. See this question.
So, my question: why is raster graphics used more and supported better even in cases when vector graphics seems to be more suitable?