I always give 2 weeks notice before quitting and make the transition as easy as possible, doing handoff meetings and educating whoever's taking over.
In exchange, I usually get shafted by the employer. In one case they tried to claw back a signing bonus (despite the employment agreement etc not giving them the right to do it - nice) and in another case the abusive studio head walked over and told me to take my shit and leave immediately despite the fact that I was a producer in charge of an entire team and hadn't done any handoff (shocking no one, the latter studio ended up shipping their product 4+ years behind schedule)
So I guess my takeaway is that it's still valuable to be nice if you care about the impact on your teammates, but I don't think your boss deserves it. Especially now when many companies have a policy of not providing references beyond 'yes i can confirm that so-and-so worked here' - the concept of 'burning your bridges' by not being sufficiently deferential to your awful boss doesn't exist.
In exchange, I usually get shafted by the employer. In one case they tried to claw back a signing bonus (despite the employment agreement etc not giving them the right to do it - nice) and in another case the abusive studio head walked over and told me to take my shit and leave immediately despite the fact that I was a producer in charge of an entire team and hadn't done any handoff (shocking no one, the latter studio ended up shipping their product 4+ years behind schedule)
So I guess my takeaway is that it's still valuable to be nice if you care about the impact on your teammates, but I don't think your boss deserves it. Especially now when many companies have a policy of not providing references beyond 'yes i can confirm that so-and-so worked here' - the concept of 'burning your bridges' by not being sufficiently deferential to your awful boss doesn't exist.