If you are doing ok, then that was the right thing to do. I started off distributing stat points relatively evenly at first, then concentrated more on strength and dexterity. Playing again I'd neglect intelligence and spirit and see if I could get away with a lower magic resistance.

Help with attribute point distribution (and skills)

At the end of the game (level 36) I had 39 unused stat points (wouldn't want it to get too easy), and without equipment had 31 vitality, 5 spirit, 47 strength, 25 dexterity and 25 intelligence.
I wasn't deliberately keeping Intelligence and Dexterity the same. I boosted Intelligence some to help with the magic armour rating and mana refill rate, then later used the Potion of Wisdom (+5 int). Dexterity was always less that Strength, but before the end game I had several extra points due to equipment bonuses. I boosted Vitality to around 20 and was going to stop, but trying to take out the level 27 guards in the quarry building before getting the battle tower, I figured extra hit points would help, and put the spare 10 stat points I had into Vitality.