I personally keep different forms of bitcoin.
Some of my bitcoin I use for trading, dabbling in other cryptocurrencies (what lead me to Steemit).
Some of my bitcoin is used as a savings/investment, held very longterm and not spent on frivolous items.
Some of my bitcoin is used as a currency. Pretty self explanatory.
So there isn't one answer to this post. Use bitcoin for multiple different things and decide the percentage of allocation by your own needs.
Okay my friend thanks for the feedback :)