Unlimited resting has been a staple of Baldur's Gate, and more than that, is a core part of DnD. If you don't have a hard time limit, then you wait a day between fights and get all your power back. Whether it's good or bad can be argued infinitely, but it's what DnD is.
Of course, getting ambushed while resting in the wilderness should be a real possibility; if you blow all your resources every fight and then one night something decides to pick a fight with you before you've recovered, you could be in a real hard spot. And some quests should obviously have time limits so as to limit the amount of resting players can do. But in general, that's how DnD plays. Walk around until you get into a fight, go nova, and then nap for a day.
Thats the exact opposite of how I and every group that ive played with plays it. You CAN blow all your resources at the first sight of trouble, and then you are useless for the rest of the day. Want to do a short rest because all (or part of) your abilities reset then? Well tough luck, the rest of the party is still fresh. Better keep up or be left behind.
Any DM who allows this shifty behaviour is also doing a disservice to his players. Its a unrealistic game-ified version of DnD and turns it more into ROLLplay then ROLEplay. Mind you thats just my opinion on it. If your group does it like that and has fun then you do you.
It just sounds more like murderhobo inc to me rather then dnd
