If you are playing with a band, and the arrangement is such that something that sounds like an acoustic guitar should be in the mix, then, sure, put a pickup in there.
To the high-fidelity crowd: yes, there is nothing in the amplified PA sound stage system world anywhere that sounds exactly like your guitar when you play it in the pure acoustic shangri-la you live in. I agree 100%. No microphone, no pickup, not even K&K can do that.
But if you play in bars, honky-tonks, or even your medium sized venues where people are paying 20-30 dolla to see your band, nobody cares. Nobody.
Except for maybe the one or two purists, once in a blue moon, slowly shaking their fist at the piezo clouds with which you are polluting a micro-brewery pub where you play once a month or once a week.
I got a flattop Gibson, CJ-165 that came with an LR Baggs installed and it has performed without a problem for over 15 years. Never one complaint from folks who do this for a living. On some sound boards, had to dial down the bass response.