No, its not very complex, its quite simple. Take photo, click send as MMS, select contact, sent. 20 seconds. And maybe back year and years ago there might have been issues but comeone buddy, today it just works, the same way SMS does.
And as far as the issue people raise about small size, you can view the photo as big as your phone will let you see. If I have gotten an image in MMS that I actually did want to look at bigger, I then just forwarded to my email for later viewing, but generally its fine on the phone.
Ever tried using an unlocked, unsupported (by your carrier) phone? At least on T-Mobile, they resize MMS images based on what phone it's being sent to -- that resizing doesn't happen on your phone itself, so you have no control. If they don't know what your phone is, you get a 120x160 picture. Useless. And forwarding that to an e-mail address doesn't fix anything. 120x160 is especially useless on a 240x320 or larger screen, and that's the norm these days unless you got a freebie phone. I wouldn't be surprised if other carriers do this as well. Yeah, so that's REALLY easy, flawless and better than e-mail.
Also to the poster above who posted about costing money to use MMS and rather use email. HELLO!!!! MCFLY! It costs more to use email on phones than it does MMS/SMS. Think about that statement for a minute. You can pay $15 for 1500 or $20 for unlimited text if you really need it. In order to use email to send pics you need data on any 3G (or EVDO if CDMA) network is going to cost $30 or more. Think about it, smartphones are the minority of the market share. The majority doesnt want to pay $30 for data to use email, so they get a $10 or $15 Texting plan and can SMS or MMS all they want. Why is email better than MMS again?
When I had my SE K800i, I used e-mail almost exclusively because MMS sucks on any unsupported phone in this country. Oh, and fancy this, I had a $6 data plan (T-Zones) which allowed e-mail, and there was no limit to my data usage. Much cheaper than that 1500 messages cost. Plus, if you have a flat rate data plan, you can use the web as much as you want. It all adds up to be cheaper per kilobyte (usually) than MMS or SMS.
If the iPhone gets MMS, that's fine, but I don't miss it. MMS is a kludge. It has to use "pages" because it's works like a "slideshow," there are upper limits on amount of text per page (dumb), they typically cost more per kB (SMS/MMS buckets aside), most carriers stick their hand in the cookie jar and resize your pictures and sending them to an e-mail address typically gets all kinds of crap added into the message by your carrier. Arguing for MMS is like arguing for the floppy disk or the modem. Yeah, it was good, but there's better technology out there like e-mail, and some countries already use that near exclusively between cellphones, even with the capability to use SMS or similar. Japan, for one, and people are always talking about how Japan leads the world in cellphones.
It makes more sense to push toward e-mail because if every phone and every computer has an e-mail client, you'll see what flawless and easy really is. Phones are already moving toward total integration with the Internet. I see no reason to hold them back.