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only use another network if you plan to not hold the btc yourself for very long. if you just want to move it from point A to B but not keep it inside your own wallet. Or if you were moving between exchanges for example. or moving it to a dex.. something where you were not intending to HODL because all you are getting when you move it on TRX is an IOU.
If you want to keep the BTC yourself you will have to pay the fee later to move it off of the TRX network and onto the BTC network.
Depends on what you want to do with it.
BTW, if you want to move BTC fast with nil fees, use lightning.