I don't care about the collection aspect. Bought a homecart system and NGCD when MVS was not an option and have enough games by now that it wouldn't make sense to switch to MVS. There are quite a few Neo games (up to KoF95 and Samsho 2 in the timeline) that are inexpensive on homecart, sometimes they cost less than their MVS counterparts. The initial cost of buying (C)MVS systems also is higher (or requires soldering skills if you want to consolize a MVS board yourself) than for a homecart deck or CD system, of course the overall lower cost for the games quickly makes up for it... ...as long as you're going for bare carts, complete kits are something else.
It's true that the homecart system always was and will be interesting for collectors, simply because of the rarity of certain titles and their high value. Fine with me, it's their money, not mine. However, I'm having difficulties with the "MVS = for gamers, homecart = for collectors" thing, it's a commonplace that doesn't apply in each and every case.
Even though I don't like the thought of a cool Neo game rotting away behind the glass doors of a collector's cabinet without being played, I don't think that these people really take away something from us/the scene. There are plenty of ways to play Neo games, homecart system, MVS, NGCD, ports, etc. If you're really interested in trying some of them, you don't necessarily have to shell out big time for the homecart version or make things worse for all of us by creating or buying bloody convs.