Rules That Don't Make Sense

Recently I've been doing some thinking on rules in different sports that just don't make any sense. I came up with a few that I think are worthy. I'm not sure how some of these can rules because most of them just contradict themselves. Here are some that I thought of...

Hockey- In hockey there is a penalty for tripping and a penalty for diving which is faking a dive to draw a tripping penalty. Both are good rules, but sometimes a tripping and a diving penalty are called on the same play and both players go to the penalty box. How does this make any sense? If a player gets tripped by someone else, it's impossible to fake a dive.

Football- When there is an offsides call the offense gets a "free play" and is allowed to attempt for something big to happen because the penalty will be enforced no matter what. On a false start, the play is whistled dead and it's a 5 yard penalty. If the offense is allowed to make big play on an offsides call, why isn't the defense allowed to make a play on a false start? Maybe an interception or a fumble. Also, when a team spikes the ball at the end of the game to stop the clock, shouldn't that be intentional grounding?

Basketball- At the end of games when the team fouls to put a guy on the free throw line and stop the clock, why isn't an intentional foul called? They're obviously intentionally trying to foul the guy, why don't they call it? Maybe the last minute of basketball games won't go on for 45 minutes if this rule is enforced.

Those are just a few that I could think of. Maybe I'm wrong about some of them and I'm missing the reason behind these rules, but I couldn't think of any. Let me know if you have any more ridiculous ones.