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I protect my hand by raising. If ppl call with overs I'm ahead on most flops.

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But this is wrong. If you raise medium, say 50ish, you will get called by all kinds of J/Q/K/A hands (IF you are playing a low buy-in at Party. I acknowledge that this is not true at higher buy-ins or at other sites). ~70% of flops will have overcards. You will be facing so many opponents that it is very likely that at least one of them will have you beat. The only way you are good is if you flop a T with the over cards. You didn't need to raise preflop to get this set value.

If you raise more, say 75-100, you may be able to knock down the number of callers to where you will be ahead on most flops. If that's the case, what are you doing? Betting out? Villain will just fold. Giving free cards? Not such a good idea.

The only value you ADD to the set value by showing strength preflop is the value of stealing the pot on the flop when villain misses. If it was worth raising TT to add that value, then if would be worth raising 57o, 92s, etc.