Why do you use Bitcoins?

[Kazimir]

I like bitcoins because they are shiny ! 

I fully agree, sir. Best reason so far

[1529675796]

1529675796

[binspac]

I use them because I'm a nerd.

[adamas]

I use it to contribute to a better world 

[aqrulesms]

I use bitcoins due to it's deflationary aspect and well thought out system of currency.  It is unlike any others and to jump into something different is quite fascinating.

Mining is another thing.  Due to its decentralization aspect I can also print my own money in this currency.  That's another factor to put in.  The people can shape the currency without any government intervention.  In this way, people have freedom to what they want with this currency.

[sceeth0]

Pragmatism:

     1.  Efficiency.  Transactions that wouldn't have been worthwhile, now are.
     2.  Versatility.  I can afford to transfer funds in ways that would have been nearly impossible with previous methods.

Intellectual Curiosity

Ideology

[herpaderpa]

Anonymity is extremely important in a world that seems to become more Orwellian every day

[Stephen Gornick]

As a bookend to this thread, more of this subject here:
 - http://bitcointalk.org/index.php?topic=94227.0

[StringTheory]

I use BTC because its simple, practical, and I think will be around for a long time.

[Raralith]

Nothing right now, just savings them up, and buying some to bide my time. My personal opinion is that physical currency can't survive in a digital age, and BC's have survived long enough to possibly survive for the next decade.

[Jutarul]

24/7 irreversible payment processing at minimal cost within minutes to hours.
Don't know of any other payment system which can achieve that feat online.

[Jurek]

Money.

[Mr. Coinman]

It's much more efficient than using fiat currency. And of course, the anonymity Bitcoin offers is always a plus.

[MadSweeney]

At first I thought it was because of the crypto stuff, the excitement of the market, or anarcho-capitalism. But this guy explains it better than I do http://suitpossum.blogspot.co.uk/2012/06/block-chain-of-infinite-mystery-what.html

[mr_gant]

Seems that having a (potentially) anonymous, decentralised currency makes for a better world. Sounds good to me.

[jadaiswel]

I use bitcoins mainly for silkroad

[louisBSAS]

I use them because paper money is less real than BTC, and I would like to see wide adoptions of Bitcoins as the new cash. 

Paper money is worth less and less every day - more drastically in some places than others.  The dollar is a 'Note' - an IOU nothing more, and the entity that prints them is not so good at handling money.

In Argentina (where I live now), we were one to one with the dollar 10 years ago and today, because of stupid decisions by the government, the currency is worth less and less DAILY. 
January 2012, AR$100=US$22.72   
7 days ago.... AR$100=US$16.80
Today........... AR$100=US$14.00

In the US, paper money has been doing the same thing but more slowly. 
$26k  1967 my parents bought a modest house
$92k  1992 I bought it from them
$118k 1996 I sold the same house.
$250k today's value of the same house
$9k-ish today's price of the same house if you buy it with actual silver dollars - yes coins (or what was real money before the paper representation)

I really don't want the idiots in Washington (or anywhere) constantly adjusting the value of my hard earned money - but they do. 

So, the Dollar shrinks in my pocket, the AR$ shrinks in comparison to the US$ - it's a lose lose situation IMHO.

I realize that BTC is experimental, but it can never hurt to diversify, and I appreciate that it can't be taken from me.  Hoping for less volatility as time goes on.

[avengre]

I use bitcoins to allow an alternative low-fee transaction on my website...

Because paypal is evil.

[MichaelBliss]

To thwart the central banksters plans.

[taplak]

it's easy to send money around the world 

[Hunner]

1. No fees or regulations by a 3rd party
2. Interesting options for the latent trader wanna-be in me
3. If it catches on, I would be highly supportive of this.
4. It's geeky

I just wish that I could use all of my IRL time to chase this and read everything and play in all the fields. But real life calls, and is what is currently funding my BTC interest.