The answer isn't that we should convince you to play Arma. I would raise the question: Do you want to? Do you have motivation to sit down and learn to get into the game? If not, why waste your time?
After all, Arma is a sandbox at the mercy of the mission makers. They can either make it simple or complex. Some like it more simple, others want the complexity. I like pineapple pizza but Stixon would court marshall me for that.
The Arma single player campaigns are the most soft introductions to Arma but do not represent the full range.