Takeoffs are optional. Landings are mandatory. The first thing every pilot does after making a gear up landing is to put the gear handle down. A great landing is one which lets you use the airplane another time. A good simulator check ride is like successful surgery on a cadaver.
Good judgment comes from experience.
Good experience comes from someone else's bad judgment. An airplane may disappoint a good pilot, but it won't surprise him. Learn from the mistakes of others. You won't live long enough to make them all yourself. Half a second in history.