You have different reasons for the different "types" of poaching...
You Have:
Poachers who take game out-of-season
Poachers who trespass to take game
Poachers who exceed personal bag limits
Poachers who take game with illegal means
Poachers who hunt when prohibited, or poach to "get even"
Poachers who take a trophy animal by one or more of the above violations
In some cases it may be the "thrill" of the violation... they may see themselves as "rebels".
Also, it may also be selfishness in some cases.
They take game out-of-season because they somehow reason they were slighted in not being able to hunt when the season was open....so, "It's not their fault... and it's not really poaching as they're following the rest of the laws".
They trespass to hunt on posted land that they once could hunt upon, but the ownership has changed or the landowner has changed their mind, and they reason they somehow have a "right" to continue, or they trespass on posted land adjacent to where they may legally hunt because they reason "that landowner is greedy by posting that land, and all the deer hide over there."
They exceed bag limits, such as taking 18 dove when the limit is 12, as they reason "lots of people do it".
Some refuse change, so (for example) with the encroachment of dwellings near where they hunt with a rifle, they continue though the new law says "shotgun or muzzleloader only"...and reason "I've always used my rifle so I have a right to continue", or they reason, "that law is stupid, so I can ignore it".
They hunt after being caught and license confiscated as they resent being caught while reasoning that, "other people do the same violation and nobody catches them, so it's unfair and I'm going to keep hunting". A variation of this is the fellow cited for a violation of which he's sure he was innocent, but the judge agrees with the DNR officer, so now that person is going to commit several violations to "get even". (Yet if the same person got a red light ticket, which was bogus, and the judge found him guilty, he wouldn't start running red lights willy nilly to "get even".)
Finally there are some who reason they've "earned" that trophy regardless if the season closed or they filled their tags with lesser specimens...., "I've been trying to get that [insert large number] point buck all year long, and didn't get him. Now I see him so I will go ahead and take him. That's MY buck".
LD