Stamp Duty

Does anyone have a good understanding of this beautiful way for the government to make money.

My question is if I pay stamp duty on a 2nd home of 3% if I then sell it and move will I have to pay the duty everytime I move. Theoretically I will own 2 properties at the end of transaction.

Basically the place I m thinking of buying is only really a 2/3 year fix then I d be looking to move on but 3% on 110k every 2/3 years is a lot of money!