I'm a long-term bull. I started buying in 2011 and have continued to buy throughout, including this month.
I acknowledge the possibility of a crash/correction of up to 50% when this rally stops. But I'm still buying.
What bears must acknowledge is that Bitcoin 2013 is not Bitcoin 2011. Implying that the current spike is going to lead to a similar 90%+ lasting crash simply due to chart patterns represents some pretty surface level thinking.
Bitcoin has made great strides in the last year and a half, including:
1) More security (hashrate), and about to get 10x+ more secure due to ASIC deployment.
2) Far more professionalism in the ecosystem in general, and in 3rd party services in particular.
3) Development and understanding of best-practices with respect to how to handle bitcoin, in terms of online wallets, offline wallets, cold storage, etc.
4) Far more merchant adoption (just ask BitPay).
5) Traditional venture capital is now dipping their feet in the water.
6) More professionals and technologists from other industries are now focusing on bitcoin. Observe the
bitcoin2013 speaker/panalist list.
7) Services such as SatoshiDice show a use-case that isn't possible without bitcoin, and gambling looks set to become bitcoin's first high-volume general use-case.
8.) Bitcoin acceptance announcements from top sites including Wordpress.com, Reddit.com, and Mega
9) More startups and serious entrepreneurs investing their time, energy, and creativity into bitcoin.
10) Huge improvement in the quality of the mainstream media attention given to bitcoin.
11) Another 18 months of successfully processing transactions without any fundamental protocol failure.
Don't forget that the fall from $32 in 2011 was triggered by a hack at Gox, which was followed by a nasty series of hacks and scams that was able to happen due to widespread ignorance and naivety in the bitcoin ecosystem in general. Bitcoin has grown up to a large degree since then, and I posit that we're over the era of easy hacks and scams that killed confidence for a year. During that time, the core ecosystem was quietly gaining the strength and professionalism that's finally being acknowledged today.