Before talking about convenience, think about whether it’s actually justified, and what you’re losing because of it.
The high-handed moralizing does not interest me, but this line is valid, and is really the only thing you needed to say in the first place. Yes, all software development is about tradeoffs. In this case, weighing the balance between the control, comprehension, and self-reliance of implementing something yourself, and the speed and convenience of using off-the-shelf parts. Of course, the exact ratio one prefers for one's own projects is neither a measure of character nor the remit of other developers.