In my opinion the high transaction costs does not make Bitcoin useless. It is still a great store of value and using it that way doesn't require frequent transferring. It is also the number one crypto currency for trading pairs on exchanges.
yes although it can effect it but not so. the transaction fee is in fact effecting the small trading, it will only effect the shopping for small items, for exxaple i am gong to recharge my mobile i have to pay government tax on it. and i also have to pay transaction fee which which is more than the recharging amount that i normally do for my mobile.
Yes I agree the transaction fees is an issue for the small transactions. The huge transactions where having a huge profit will not be affected greatly.
Yeah the small top up type of things will cost high for the people so I guess if possible it is better to use the alts for such purposes and it has been noticed that the small transactions are now more common it the etherium and the tore coin.