I have always found mms service to be spot on with tmobile and orange, almost instant delivery and tmobile included mms in flext allowance so it never cost extra, but obviously service will differ with different providers and countries.
it just really annoys me as mms is such a good feature, its more than just sending a picture, i used to make mini presentations on n95 etc and being able to send a video with voice overs etc was a brilliant way of sharing moments more with a more personal touch.
Also i do find it a bit embarrasing when people try to send me a picture/video and i cant recieve it and have to explane my 'jesus phone' doesnt support them.
I would pay for an app i guess.
I guess it varies from place to place. I know SMS took off immediately here, but MMS doesn't seem to. The only MMS I ever receive are spam from my network, and even those are rare.
Personally, I've no problem with MMS biting the dust as I expect Apple to replace it with a free alternative - whether that via an improved email client or otherwise.
I do wish Apple had a Euro development centre though - their focus is (unsurprisingly) very US-centric. Had they a Euro influence, they would have launched the iPhone with better SMS functionality (& possibly MMS) given the dominance of txting over calls here.