Mainly you are missing 10 development levels, so that you can farm without a shield in a fairly safe manner.
In my experience it is generally the wrong strategy to farm with higher-quality troops, except in L8, L9 or Gold of Gods spots (in which case a shield should be used).
As already said before, with additional boosters and appropriate troop assemblies it is possible for almost any attacker to successfully attack a farm spot. However, the interest of most (thinking) attackers drops sharply if there are only a few thousand T1 troops in the spot, as the points to be gained are then in a bad relationship to the attacker's effort.
... but of course there are always attackers without a brain, but then your own losses are manageable.
In this case, I sometimes have a lot of fun playing cat and mouse with the attacker with 500 Blides and amused myself as the attacker shuts down his shield and fires acceleration booster every time.