I wonder how you would perform in the Dragon against a stronger player. It requires quite an accurate knowledge of forced lines as well as awareness of white's typical attacking motives.
If you memorize a number of lines you can beat equal opponents easily but this does not mean you are learning chess effectively - do you understand why black sacs Rxc3 or Nxg4? Or when Bxe5 is better than Bxg4 after e5 Nxg4? Or you just blindly follow Gufeld's (or another author's) book?
I spent at least half a year studying Gufeld before actually playing the Dragon in a tournament game. I wanted to understand the motives and be able to find a good answer to a move which is not covered in the book.
What is more important - by playing the Sicilian you do not expose yourself to a direct open attack like Scotch, Evans or king's gambits.
You may get better results with the Sicilian but you are actually avoiding to improve your chess when not facing open games. The art of defense is a very important skill which can benefit in any game.
By playing the Dragon you will learn how to counter-attack which is also very valuable but sometimes you just have to sit and suffer opponent's pressure until it runs out and open games are the best teachers of that.

Adorable if you are rated around 1400 then you are not a beginner.
My comment assumed you were a beginner.