If you have a history of depression, then it would not be wise to do a cycle. The fact is, if you only plan on doing one cycle your entire life, its going to be hard to keep your gains your enire life. I've been off for about 4 months and still have most of my gains, but they are slowly slipping away so I'm about to hit another cycle. Roids are addictive in that way, and unless you plan on sticking to it for a while, depression will come when you can't retain all of your gains.