Yoda, and even Luke Skywalker would tell you that you do not need to give yourself over to the darkside for it to really ruin you, even just temporarily.
I have seen the darkside. I gave it a good once over. I examined it from the border; poked at the covering layers; explored the breadth of the border from coast to coast. I did not go in. I'm pretty sure it didn't notice me scanning and poking around, I believe I am safe for now. But make no mistake, it has invaded my thoughts and crept up by way of fears I should not have. Memories of heartache and betrayal that I thought were buried. But what I have learned is that if a memory gets you in the throat than you are still holding something that you need to let go of because it is keeping you from being who you are supposed to be. You can't be who you are supposed to be if you are still trying to be (or just can't let go of) who you were before. So if you are in between who you were and who you are going to be... who the hell are you? Who the hell am I?
Everyone knows - even Anakin, although he learned too late - that the only way to keep yourself strong and safe from the dark side is to call upon the force, to allow the force to be strong in you. The force. The light. It needs to be your guide from the inside out. So may the force be with me and with you.