You do not suck at it. It just takes time to get used to it, if you aren't interested in making stuff like custards, smoothies, breads, sorbets etc.

You could try one new thing a week, replace something that you normally buy in a packet or something like that - and make it in the thermomix instead. Google for recipes or ask in here! I don't use mine every day (although DH does for his protein stuff) but to have it there when I need it is great Like when my mum came over and was doing some cooking with the kids, and ran out of icing sugar half way through a recipe - I had some sugar in my pantry that I turned into icing sugar for her in the thermomix. Handy! Couldn't do that without it Just takes practice to get over the fear of using it I think, I haven't converted all my regular recipes into being able to be cooked in it, mainly because I'm still a little bit intimidated by mine and I've had it for 2 years LOL