I've never been tossed for balls and strikes. The main reason why I've been tossed in 16 years of high school coaching is a build up of wrong safe / out / not being in position / lack of rules knowledge stuff.
Overall I don't think getting tossed in high school ball is very effective. I have never seen my team or teams we're playing have dramatic comebacks because the coach got tossed. I don't see the point in not finishing that game and at least another game for sitting out to fire up my players.
That's not to say I haven't been tossed but I never went out there thinking "This will get my boys fired up".