Turrets need an upgrade. Right?

I probably speak for everyone when i say that turrets don't do their job good enough. their too weak mid/late game and kinda give false hope. They have to be stronger to do their job. Maybe have a turret leveling system or a true damage based on max hp system. Personally i've been in a few situations where this has happened, most people tanky or not walk in and walk back out with barely any damage taken. most champs that can be fighter/ tank are to powerful vs any squishy mage or turret. Why is a champ better than a turret? they need to be improved as a safe place for any champ vs. and champ. Of course tanks are ment to turret dive, but when ANY champ can, its not fun anymore. If turrets can be dived by anyone, why have them?. make turrets stronger and bring fear back into the hearts of all champs fed or feeding. Agree?