Lol, yes i don't often waste condition% as well, but you don't have to always train for a squad bonus. I.E with GK/ST. I don't care about some 2% squad bonus I have to turn on during the game, I care about maximizing my training effect on my strikers and GKs. Yes getting both is nice, but I will choose the latter each and every time.
I don't think that I'm too far off base with applying real-life concepts that I learned both from reading books on training/managing a football club and from personally playing. If you start a training session without properly warming-up/stretching then injuries will likely occur and your performance will not be optimal. This is fact. This is a game for football enthusiasts, not nerds looking to exploit its programming. You can succeed in this game by taking many different approaches/paths, you're just trying to piece together a map by yelling for directions instead of taking a methodical, testing approach using RL football knowledge/game theory. You also are stubborn and dogmatic and refuse to think outside the box. These can be strengths, but more often they are weaknesses.
You need to watch Real Steel again, then apply that to football.