Personally, I never have nor will I ever player a turn-based game with time limited turns, even in multiplayer. For one, not all turns are equal - sometimes you need a lot of time nad sometimes you hardly need anything. It is definitely possible to get around time restrictions in multiplayer games. Time limits should definitely be an option, but not a requirement.
I agree and disagree. As a chess player who knows too many people that would happily take an hour per turn to move, I say that creating a game with time-limited turn is fair. You are right, sometimes you need a lot if time, sometimes you just click 'next turn' over and over again until your next spell is finished being researched.
Of course, its your choice, I'm not trying to persuade you that you should play a timed match, just that you don't shun the option.
The person that takes his time to carefully check every city, double check all his positions, and balance his cost vs. effect is going to take longer than a person who just flies by the seat of his pants (I'm usually in the 2nd catigory). No matter the game, the person that does the 1st thing will take longer than the person that does the 2nd. Does that mean that one is better than the other? yes and no, but we can't tell with the information provided.
Now, nobody isn't going to have those long turns The person that can do it all (or most of it) the fastest, will be the winner in timeed-turn game modes. In chess, my father will beat me almost every time if there isn't a turn limit. However our games usually last for 5 hours. The moment I pull out a clock of any sort (I usually give him 10 min a turn, which is crazy, but any shorter he won't even play me) and he looses. Why? because he is insanely careful (I put emphesis on 'insane' because I'm an not exagurating when I say he's taken an hour to make moves before.) I think I am a better chess player because I can do it quickly. I don't have the patience to map out moves to the complexity that he will, which is why without a time limit he wins, but he can't make quick assesments of the board so in such case I win.
That is why I say let there me a time limit option. In compeditive play (like a tournement or something) I would fully support putting something like a 10 or 15 min time limit per turn on a strategy game such as HoMM, MoM, Civilization, or whatever.