The webmaster is appointed by the band to take care, among other things, of the forum, this means he's the maximum authority in here. So he decides how things to here, and he has the final decision also about the layout of the forum... and his policy is "Impress people with words", meaning that he's contrary to many of the fancy additional features you may find on the other boards.
In short, this means that he doesn't want to implement new skins (the layouts), nor add new smilies, nor change the limit of the size of the signature, nor introduce avatars, nor enable the IMG tag that allows you to post images.... the board will remain the way it is, this is his will so just accept the fact that he wants things to remain this way. This implies that topics "Why can't we have avatars" are useless.... the answer is right here, you just read it
: Private messaging has now been enabled. Please use it responsibly!
: This post no longer applies, as our switch to the newest version of PHPBB saw both inline images and avatars enabled.