I agree that tower fragility is excessively annoying to play around. You can dominate a lane for 10 minutes straight, gain a large CS / XP advantage, and then just see it completely wiped away the moment you aren't in the lane.
Like I get that map positioning is important, but when your enemy can equalize dozens of bad decisions with one lucky one in the early game, it makes lane performance feel a lot less consequential.
And I also agree that the towers damage is pathetic at early levels. I don't think a support tank under level 10 should be able to get away with eating 5 or 6 turret shots without dying.
Unless you happen to be a champion with multiple forms of CC, your tower carries a paltry amount of threat.
Sometimes I feel like instead of a tower, it should just be a giant bag of gold sitting on the ground with a few bucklers laid up against it.