When valued against USD or GBP.
I know a lot of people believe it's gonna go to the moon.. or at least rise steadily into the 1000's of dollars and a lot of people believe it's a Ponzi scheme which will eventually leave Bitcoin worthless but what if Bitcoin does nothing, it just sticks around the £200 - £250 mark forever?
It certainly would make it more usable! If I buy some bitcoins today and dont get them for 4 business days (I usually use coinbase) I could end up with 10-25% less buying power. If price stabilizes, I think it ultimately would be good, although a lot of people are here ONLY cause they think the price will go back up
Bitcoin itself will never be stable. There will be other options which will be stable by design like NuBits and BitUSD.
If you are talking of somewhat stable like say gold then that will come through widespread adoption and will take time.