As mush as I would love to spend real money on a flash bike, Im no expert, so the one I have is just fine, and will be until such time as I crash and destroy it, someone crashes into me and destroys it, I try and convince my wife its making me live longer and she kills me using the bike, I don't see any reason to get a new one.
I may have mentioned this before, my first bike I guess would now be known as a hybrid, had tyres a little wider than the ones I have on this bike, but not by much, normal handlebars and only three gears from a small black device. Within the first year of having the bike, oh it was a used bike as well, I had it stuck in 3rd gear, not much later and no longer had front brakes, and after a bad crash into a gate (steel one) with someone on the back, the front had bent so much so that I could no longer pedal and turn at the same time, but the bike still lasted me up to the age of 16 (got it when I was 10) at which point the fact the only cleaning it ever got was when it rained, it never got any oil or lubricant at all, and it essentially seized one day on my way home, so I threw it over a hedge and walked the rest of the way.
I would be 16 then, now I am 45 and this is my second bike.