Ken when you quit looking at it as an investment you may realize it's potential.
I  don't know  of any other way to  look  at it.    I don't view  it as  an investment  because  I don't  view  bitcoin as  an asset.   If I  understand  it correctly, bitcoin is  nothing more  than  a couple of bits  of computer  code.   There is no physical  manifestation  of bitcoins that I  am  aware of. Maybe  I  am wrong in that belief.
 Speculation ??   That comes closer to the mark  for  the way  I look at it.  But  again, there is currently  no way to  hedge that speculation.
  Someone  above  mentioned  US equities  as  a  way to  gain exposure to  bitcoin. That makes a lot more sense to  me. At this point, there are only a few ways to  do  that.
Square  and PayPal  both  are publicly  traded companies that allow  bitcoin  transactions  on their platforms.   By owning shares of either of those two,  a  guy  could  also gain  exposure to bitcoin  while also owning a  portion of a  company with traditional  sources  of revenue  and income as well as  a growing market share.
The  problem  for  me,  with both of those  companies is that they  are anti-gun.   I won't participate  in that, even if  I could  make money at it.
 Robinhood  is supposed to go public within a few months. That  would  be  another more traditional investment  that will  give  exposure to  bitcoin..............if you believe  Robinhood  is  a viable  concern.
Then  there is  MicroStrategy Incorporated (  MSTR) .  A public company that issues debt  and  uses the  proceeds to  buy bitcoin.  Sounds like a disaster waiting to happen but at least there  is  an  avenue to  hedge against a decline. That is  true  of SQ  & PYPL also.
 As  far  as  using bitcoin in a retail  setting,  I have  a  couple  more questions  that may have  already been  addressed.
 Let's say you go  out to dinner and the  bill  comes to 100$. You  whip out your  Iphone  and  access  your  electronic  wallet  and pay the bill  with bitcoin.
 1.  What is  the additional  transaction  fee you pay and what is  it based on ? This would be just like using  a  credit  card.
 2.  You just spent 100$ of  bitcoin  that you  bought  for 80$  two  weeks  ago.    You  have just  triggered  a taxable  event.  How do  you  account for  the  20$  capital gain on your bitcoin ??