So the MC is fun because he is, for once, actually cunning enough to be somewhat realistically successful with his Thug Lyfe.
His interactions with 'elite' / hard-to-get women are also fun, in that they are far more realistic than the vast majority of LNs out there. The author seems to have a pretty good handle on how to flirt and tease women in a seductive way (a real player).
So although we still get a harem, the women are actually much more realistic and the steps involved in hooking each one are far more intricate, so it is quite a bit better than the usual LN 'romance'. (ex: no need for the plot to give the MC an aphrodisiac that 'forces' him to rape his virgin women - in this case, the MC is actually able to progress his romantic relationships without such pathetic plot devices...)
But even then, the MC is more of a pick-up artist than anything else, so it's not like the romance feels like much more than just trying to get laid with a series of super hot women. But still, trying to get laid with somewhat realistic (personality-wise) chicks is better than fantasizing about totally artificial yandere/BDSM/loli/childhood-friend archetypes impossibly getting attracted to some clueless but plot-armored protagonist...
Sometimes though, the MC's revenge plans can be so elaborate that they are cringe-inducing for the reader - it is just too much, and at a certain point I suppose it just starts to feel too disproportionate.
Anyhow, I enjoyed the series for a while, but I'm getting a bit tired of the lack of higher goals for the MC. He basically is just trying to get laid and get stronger, while screwing over the other thugs in his environment (100% thug world).
But seeing how this anti-hero of the series proudly doesn't give a crap about anyone but himself (and his babes + hangers-on), it has been fun to watch a new translating team pop up with the motto "we don't give a f**k", which seems very appropriate given how the novels basically teach the readers to emulate exactly that kind of behavior. At the very least, I do not see how the original translator(s) can complain about any of this, since they seem to adore it when the MC does it...
LOL.