Well you said it clearly and honesty. What most PPC gurus and program don’t tell you is written all over your post. I went through that phase where I though PPC was the end to my riches. Hardly. You don’t control your traffic platform it belongs to big search engines. You get slapped and run over their rules. They jack up keyword prices on you, they want to make more money off you and you end up not making anything. Most PPC seminars are dupes in fact, they dont tell you everything.
One of the cool things about Google AdSense is that it's so easy to get set up. If you have a blog or website, you can sign up for a free Google AdSense Account. From there, Google will give you a unique code that you will paste onto your website. Google takes it from there, tracking your page views, traffic, and earnings on your behalf. There is no upkeep or maintenance to get this thing going, which makes it a no-brainer if you have a website already.