Things about 4 man premades that irritate me when i'm the solo member

Everything!

Being that lone solo player sucks. While not always, a large amount of the time:

• You have no say in votes.
• You are at the mercy of the 4 man to decide if they will help you in lane or just focus on themselves.
• You more often than not are forced into an uphill battle since they have a high ranking member while you are their counter balance.
• You may become the scapegoat for losing the game if you dont perform well.
• If they have a team name, the enemy team knows exactly who to focus with ganks.
• Can't argue or suggest anything with them, because they have agreed that you are wrong.

In my opinion, the solo player paired with a 4 man should have some special benefits to postgame IP/LP amounts. Maybe an increase in IP gain and a decrease in LP loss if they lose. Nothing changed for winning though, because issues like the ones mentioned above most likely did not happen. Then at least they get compensated for loss of their vote and having to face more challenging opponents.