if i get caught and know i can't get out of it, i would admit it. luckily my mom is a conservative who didnt live much so it was easy as fuck to lie to her. I havent had to outright lie much besides with my mom or maybe stepdad. ive had a couple times where something was found out about me, but i hadnt actively lied i was just keeping it a secret. which is sort of a lie but less direct.
if i had kids i would lie to them for sure though. and im sure they would lie to me.
I don't know if I'd lie to my kids about this subject directly (I don't have any so this is hypothetical), but I also don't know how I'd talk to them about using violence. I wouldn't expect a kid to understand the difference between proactive use of violence, disproportionate use of violence, and an appropriate use of violence. And if we're talking about a boy, I don't even know how you begin to talk about gendered violence. Realistically, you just tell them don't hit anyone unless they've hurt you and are gonna keep hurting you, and if they're a boy you teach them never to lay a finger on a girl for any reason? But both of those are "lies."
That's kind of a heavy example, but it's the first thing that came to mind. You'd probably find similar examples with lots of topics that kids may ask about though, like if they ask what a bad word means and you don't want to spend a lot of time explaining things they'll have lots more questions about? I don't know, maybe that's unhealthy too, but realistically you'll always end up telling your kids some things that aren't 100% true just for practical purposes.
i honestly can't even think of an example because im never going to have them. but i feel like something would come up that they were curious about and id have to squash it, at least temporarily.
i just don't want the responsibility and i have a lot of anxieties already that i don't want to add to. my mom would stay awake all night worrying about my sister(i feel like she didn't do this as much with me, a male) and i get those same worries about all kinds of things that arent children(sometimes its just about my cats when i go on a trip). if i had kids id probably need anti anxiety meds. im an uncle to 6 kids through family, and 2 through a brother from another mother, that's fine for me.
if im the same person, probably not. but it's hard to go back in time and undo having 4 sisters lol. id be a different person in some way. Hypotheticals will always be weird to me.
Existence of the tooth fairy and other creatures of the fae realm who feed on discarded human dentin, some of whom may or may not be relatives of the Mothman.
Santa Claus and his vigil over humanity from atop his fortress of solitude at the north pole, wherein he keeps the scepter that controls the Ray of Judgment that he uses to determine which children are among the worthy.
The Easter bunny and other extradimensional lagomorphs who excrete high fructose corn syrup.
...My kid finally called us out on these last week. I'm surprised that it took as long as it did, although it was hilarious watching my partner try and fail to double down.