Just for the record, your bicycle is a .....
And what the heck is a "serious" bike? One that only serious people ride? You can get some really decent shimano derailleurs shifters and cassettes on a $1500 bike. As components continue to advance, what was expensive and advanced and only on high end bikes years ago is now available on a many bikes now.
Pardon my sidetrack LRJ88.
It's fine, i've been following the whole bike/flashlight comparison deal but i feel it's using the somewhat wrong standards for comparison when it comes to a $1,500 bike being like a Maglite and not a serious bike.
A $40 bike that you pick up used but still working would be pretty much like the Maglite, everyone knows about them and if they get lost or something happens to them you aren't really heartbroken, it's still just something to get you from point A to point B, right?
A $1,500 bike would be more akin to higher consumer grade flashlights today, your Fenix, Klarus, Emisar (due to complexity and mod potential more than the price) etc. that are leaps and bounds above the common Maglite in almost all aspects, but less people get them since "why should i pay $70 for a flashlight, it only lights stuff up, my $5 xxxxxfire does that too" and they don't know about the benefits of them.
Then come the $10,000+ bikes, your HDS, Malkoff, Surefires, flashlights whose quality and workmanship border on custom and who are generally leading in one area or another over the grade below them, you get them because you know you can beat the snot out of them and they'll keep working, they're more or less the best you can get for their intended purposes and the price reflects that.
All this being said as you mentioned too what used to be mindblowing and cost you an arm and a leg (1,000 lumens anyone?) is pretty much staple today, as is parts that used to be really hard to manufacture for bikes that can now be milled or molded at a fraction of the price with the same quality that you used to have to pay premium for. Technology advances and that flashlight/bike that you paid out your behind for 10 years ago will have an equivalent today at a lower price and while it doesn't make it an unfair comparison it also makes it harder to compare tiers.