No shame I've been an active /k/ommando for a decade, it's much like the rest of the boards aside /b/ /pol/ etc that yes it's needle in a hay stack but when you find those good posts it's fucking all worth while.
/tg/ is also common since it's literally the best place on the net for battletech.
/ck/ is great for webm's I really like watching street vendors skill and shows all around the world and if you do it on YT you either have 30+ min videos of a dozen people doing stuff, or 2 mins of show and of buffer so a guy can buff his YT channel stats.
/fit/ because my god laughter and not a bad place to learn about PEDs (always check with someone who knows better tho)
As much a car freak I am, /o/ sucks I don't go there.
/vr/ because they have a general about OG doom and mods
/pol/ because it's fucking /pol/ and always right.
But honestly, it's changed a lot over the years and mostly for the worse (personally I think banning GG from it was great because A don't care B too much autism for even 4chan) splintered off and lost a lot of the most hardcore users in a bad way (meaning lifeless posters trash went to 8 infiniti etc) I'm also in the camp of the claim that really GG was being spam botted and MUCH less care than anyone was being shown. I do remember it being spammed on every board I used, with a tweak, Zoe Quin is gonna take our guns, support GG, etc. I just stopped using the site for months.
Also I've done a few of the Nuggetfests and other /k/ meets and literally have had 0 bad experiences, some people are a bit, well.. 4channers, but around a ton of booze, and fire arms, never unsafe feeling. Also, the kindness and all beats any other gun groups I've met. True story one time I had JUST night before finished a basic bitch AR (my first home build) I forgot a rear sight! Gentleman I just met let me his ACOG for the day didn't know me from Adam, (I personally think he might work for triji as I became hooked on their optics). Made some real friends off it and bought and sold stuff through them etc.
I don't mean to brag or powerlevel, but I think places like 4chan or here, are very much a personality thing, most people write them off due to the low end users, and shock humor etc, but as a white collar professional home owner etc there's a lot of smart people and nice people on 4chan. Much like here.