[Edmunte1]

Some points of view:
- Tactically bidding 4♥ could be an 10-6 situation (win 10 in 4♥ makes, lose 6 if it fails), if 3♥ makes - so you should bid the game if it has more than 36% chances of making. Of course there are some aditional factors:
-you could go down in 3♥ too, so you lose only 3 IMP's by bidding game,
-you could get doubled, though it seems that opps don't have enough defensive tricks outside diamonds for doing that (they don't know you have 2 of them!)
- they could easily make some defensive error (for example not comunicating in diamonds for finessing ♠K if partner comes with some good long clubs)

Statistically bidding 4♥ is against the odds:
-partner holds an average of 2 hearts, and if the hearts lie badly (4-1 -28%) you may get punished. ♥J would have been a great asset
-partner's expected number of hcp's is under 4 (it's around 2), and even if he has a maximum, his points may not work properly ( wasted ♦Q or ♦J, ♠QJ and no third round control in clubs). In fact third round control in clubs is almost essential for game hopes (or ♠A, extremely unlikely)

In real life you got very lucky. You found 3rd round control in clubs and an working finesse and third trump.

[dburn]

You could always bid 3NT. It may make rather more often at single dummy than it should at double dummy.