The tilt effect is the moderation of swings in axis inclination -- makes for a stable, benign climate. Also, a big moon creates tides, allowing marine life to emerge onto dry land.
Problem is that our Moon is a freak, created during a giant planetary-scale collision 4.5 billion years ago. Although it can happen (clearly), it's not a likely event.
True, But these big Jupiter+ size planets that orbit closer to their suns could have earth size/like moons. It might be rare that life forms on it's own separate planet. I am just guessing that orbiting a big Jupiter+ size planet would keep a body just as if not more stable than the moon does with the earth (Well assuming the earth like moons orbit far enough away to avoid becoming like Io).