I haven't used them really, there's one nearby but the fees are too high, I've been told so.
If you never used it, how do you know the fees are expensive? Don't just believe someone that told you, better try yourself. If I were you, I will try it even only once. Try to do any transaction with a small number at least. The purpose is to experience it and know the truth about the rumor of high fees.

Not much of a use for Bitcoin rather than investing, as cannot be used or traded easily for fiat currency.
Me, too. I use Bitcoin is mostly for investment, never try to buy any goods or services with Bitcoin. Moreover, using Bitcoin or any crypto coins for payment tools is forbidden in my country. So, we have no chance to use Bitcoin for any purposes, except as a digital asset.