[xdude]

Messing with core files is quite useless in Wordpress, like its very complicated. That is why i prefer HTML web pages rather than wordpress due to limitation.

Actually Wordpress has less limitations when you compare with doing all with HTML. With HTML you can do only Client side tasks. To Do server side programming you need something like PHP. and Wordpress has everything premade which save so much time. Same goes for SEO. These plugins have everything you need to do.