Earlier quoted context omitted.
I think the issue is, a spice rack from IKEA may work, but it's not going to look great, or last long. Any flat pack spice rack, will be shoddy quality, and probably break. You don't get good furniture by mass producing it like that. Same with software. What if I want a custom spice rack, with some secret compartment, in solid oak.
The idea that using well tested, widely spread open source software is somehow less reliable than writing your own is the kind of baseless FUD I wouldn't expect from you, axod. Next, you'll be suggesting that people write their own web server instead of using Apache? Or perhaps they can trust other people's code so long as they pay for it, so you'll send them towards IIS? Come on, now.
If the webserver is a key component in your success, then definitely. Write a webserver. It was for me, which is why I wrote my own (After I found others lacking).
If it really matters, and the existing stuff isn't good enough for your use-case, write it yourself.