yes it will be get high because it became a daily need part and when people will depend on it transaction fee will get high
everything that will be in demand will surely grow the fees and this is a common thing when talking about cryptocurrencies.
and why need to be problematic when we are gaining high already when that time comes.
I can't name any reason why Bitcoin fees will lower in the future. Maybe Bitcoin won't be the perfect medium of exchange, but it will be used as a store of wealth.
and it has been happening now since majority of people who has Bitcoin is Holding and not using it commonly.