CAMRA

It's funny how your opinion of certain alcoholic drinks can change over the years. When I first started going to the pub, the only pint I would have would be lager. I couldn't stand any real ales or Guinness. Now it's almost the other way around. I can still drink lager but I'd much prefer a pint of real ale.
Lager is really just a bland fizzy drink designed for one purpose only which is to get you drunk. This applies especially to most of the mass produced cooking lagers such as Tennants or Budweiser. I like to steer clear of these as there is no fun in drinking them. You could actually drink a pint of fizzy piss and not be able to tell the difference.
My drink of choice at the moment is real ale. There is nothing I like better than going into a pub which has a selection of different ales on tap. The Cask & Barrel pub in Edinburgh is a good example of this. It usually has 10 different ales, 6 that are on permanently and 4 guests that can change on a weekly basis. I can spend the night drinking in these places and not have the same drink twice. This isn't always a good thing though as some of the ales can be quite strong, I've had a couple of rough morning afters.
I've even got into Guinness quite a lot recently. At first I didn't like it, then I could have one or two pints but would have to stop there. Now I can drink it all night, especially if there isn't much selection in the pub. Pretty much every pub has Guinness so it's always a good fall back option.
Perhaps your tastes change as you get older. Now I want my pint to be smooth rather than fizzy and to taste of something rather than just being bland.