Honestly speaking there are a long way still to go for bitcoins to be accepted as matured currency. The key factor of a currency should be it's less volatility but currently or till now predicting this from bitcoins is not wise.

bitcoins are now around $3500 but no one know what will be the price value after a week. But consider the price between dollar/euro or dollar/pound it's predictable that there will be no big difference in near future in value.

bitcoins is still something good for investment but not everyday currency. May be Lightning Network will improve the Bitcoin and change the way we see bitcoins now.

Please see why I use bitcoins every time instead of Bitcoin 🙂