[pashadia]

I think that this hand is an advertisment for Support with Support and for DSIP doubles.

First: Since I have bid hearts (through X), partner is merely raising my suit. Passing the dead minimums is fine, but anything else with support should bid 3♥ (or 4, or 3♠, for the stronger hands).
Saying that partner is not out of the auction is wrong, because of two reasons: spades might be raised to the 3rd level, and even on the 2nd level, he might have problems with 35xx or so.
Bidding 2NT G/B instead of supporting hearts is suicidal for the same reasons, whenever the spades are raised to the 3rd level.

Second: In order to accomodate the large interval of the 3♥ bid, action doubles (DSIP) over 3♠ are very much needed. Responder will bid 4♥ with most unbalanced hands, but for the balanced hands in the inviting range, he might have a problem -- easily solved with a double. Opener will pass with a balanced hand. (Of course, vulnerability is important for this discussion).
But how often will they make 3♠ when we're both balanced and have 22+ points ?

[cherdano]

I think there are a lot of minimum hands where we belong in 3♥ where partner won't be able to bid again. E.g. I wouldn't like to pass with xx KQxx AKxx xxx. If partner has 5 hearts too weak for 2♥ we definitely want to bid in 3♥ but often he can't bid again. Similar with many 7-9 hcp hands with 3 spades and 4 hearts.

[Winstonm]

It's a positive expectation bid - bidding 3H looks like a better idea than passing 2S.

Edit: (Meaning, as Phil pointed out, a reason to bid - not simply 4-cards in hearts)