It was close friend of mine who introduced me to bitcoin and it was completely new term for me at that time but similar to other's I also did the same mistake and underestimate it or say ignored the concept without any investment and at that time was few dollars only but my bad luck.Slowly it gained momentum and i came across it once more so decided to dig deep about it and then realised my mistake.Invested few amounts then but sold some again for funds required but glad that i still hold some stash in it and will hold it for long term.