Towers are making the lcs, and the game in general boring.
They are so weak and offer the enemy team gold. All they do is rotate and take towers with no action. All you here the casters go on about is "maybe we'll get some kills this game". I used to love watching pro games now its so stale. Even in my matches towers don't do anything. I can tower dive or get dove at level 6, or sooner depending on who I'm playing.
Towers are not an asset to your team, they are an asset to the enemy team. They are an artificial way of progressing the game because Riot doesn't want matches lasting 40+ minutes. However, they last 40+ minutes anyways due to how easy it is to take a tower without actually killing the enemy team.
Make turrets hurt, buff there defense early game so that teams can get gold from other resources, like other champions.