I am one of the ones on steroids. But that being said, my first cycle was 2 years ago, and I had 10 years of serious natural training before I went near them. So I actually have more experience training natural than "on".
Training natural is a must, even if someday you plan on using gear. Its really important to build that base, but more importantly, to have your training and nutrition nailed. Steroids are an aid, if your training and nutrition are not bang on, then you will get very little from them. The years I spent doing it naturally, I made incredible changes in my physique, transforming it from a scrawny little thing, to a muscular physique where it was obvious to anyone that I spent a lot of time in the gym.
The years I spent being natural were definitely to my benefit as after one cycle, I had a physique that was ready for competition. This is not common though, as my gym (and elite) is full of guys that have done 5x as many cycles, and they barely look like they work out.
So stick to it naturally, and see how far you can take your physique. If you are dedicated, you might really be surprised