I will explain it to you so you can understand it easily:
- You need to pay fees in order to make miners look at your TX and complete it.
- If you do not pay fees, no one is going to mine your block, it means that your transaction is going to be ignored.
- Better to afford some bucks, and do not risk your whole transaction.
it is simple as that, dont be so greedy, they are just $3 or $4