Surfing isn't really like anything else.
This is probably why surfing computer games tend to be unsuccessful or at least have to be unrealistic. Most of the things you can do in real surfing are fairly boring for a gamer, turning etc. But surfing is about feelings and that's what makes it unique.
In fact Skateboarding was invented by California surfers looking for an alternative when it was flat. They screwed roller skate wheels onto planks of wood and 'surfed the sidewalks'.
The problem is that you can't get the feeling of dropping into a wave unless you do it. It is IMPOSSIBLE to recreate the feeling of getting into a tube, it is a truly unique experience.
This is why people fall in love with surfing so much - it's all about the emotions and feelings it conjures up when you are out there. This is why non-surfers don't understand it either.
I have never met anyone who tried surfing and came away thinking - "that was OK, I'm not bothered if I do it again though". Everyone I know who has tried it has been hooked straight away!
Get out there! You won't regret it.
Also, about 'totally sucking' - I can pretty much guarantee that you won't be pulling into barrels, or doing 360 aerials after your first go, but even if you don't manage to stand up, even if you only get carried to shore lying down, you will love the feeling and you WILL want to go again!