Dreams are messages from your sub-concious mind to your concious mind, right ? So if they're that important and they're meant to tell your concious mind about something then why would you want to go lucid in your dreams because then you can just totally change the dream and the message will go unheard.

Please reply with your veiws as I'm deciding right now whether or not I want to learn the ability to go lucid because once you start sub-conciously looking for dream signs in the real world and the dream world it will be very hard to lose the ability of awarness in your dreams