I think one of the reasons why Bitcoin trading is the best and the best is that when one trades only Bitcoin, his profit will be less than other coins or tokens and vice versa the chances of losing from other coins or tokens will be much less. I personally think that Bitcoin can be the only product for long-term trade management or long-term planning.
Do you think there could be anything other than Bitcoin in terms of long-term planning?
Is there actually anything like a long term trading?
Could you be referring to investment? If so, bitcoin the king is the best option for a long term investment.
Trading BTC pair doesn't make the desired movement than traders want but I like BTC trade pair during bear market.
If you gain, your profit would be accumulate in the bitcoin and this may turn to a great news during bull market trend.