I'm really against taxing bitcoins because it defeats the main feature of bitcoins which is its decentralization. If it gets taxed, the goverment takes over bitcoins one by one. Imagine that you have to pay a percentage of the bitcoins for transaction fees and then pay for tax. That's too much if you ask me.
Taxing individual transactions is autistic af and the governments probably wont even bother with that. Theyll tax your profits though with BTC