I can't speak directly to skating, but I am a yoga teacher so I see all kinds of bodies working with all kinds of things that are "naturally off." No body is perfect, we all work with what we've got. I hate to see you be so discouraged so quickly, so I'd recommend you move forward... slowly, thoughtfully. Knees are a big deal and you want to treat them with care, but I don't think that means you need to stay sidelined if this is something you want to explore. More frequent, shorter sessions are going to be kinder and help you build strength better than longer more aggressive sessions. Treat your body with care, pay attention, and go have fun! It never hurts to run it by your doctor too.