Wow, I got a big headache now..
If Mav talking a little sense into you gives you a headache... I can only imagine how much a day in the markets beating sense into your account would make your head throb.
Jesting aside.. how you're presenting the argument is too open to interpretation, inexact, and sorta reeks of hindsight bias. In hind sight, it seems 'that simple', but it isn't.
The prediction part is key, because seeing that the market has been consolidating recently doesn't mean it will continue to do so by the time you take a trade.. and the same goes for trends. And even if you have a method of 'predicting' that the trend or range continues long enough for you to profit from it, you're really betting on trend continuation and range continuation.. or your betting on volatility (depending on your entry methods) as Mav said.
.. You get it