Valorite hammer use depends on how far into the end-game you want to go. Since obtaining Val hammers is not nearly as difficult as it used to be, thanks to the BoD rework, you can just keep getting hammers to make the armor and weapons you want, knowing you're going to have to make new armor/weapons shortly. It's a cyclic system.
I'm not saying people should do this, I'm saying it's a possibility, you
can. Generating hammers for these types of weapons and amor is probably not realistic gameplay for many, but it can be for some.
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Using a val hammer you can easily get 7 mod weapons that can still be enhanced. (These are on TC as a demonstration only. I wouldn't actually use these on Pac.)

I chose vampiric and vitality here, but you could choose vampiric and something else to bump your leeches to 2x100 easily, or maybe 3x100 with a bit of work, or a hit spell effect, etc. You might even get a bit of ele damage with a 2x100 leech and could still enhance.
Yes, they cannot be repaired, so you're not going to be using them for that long. However, I can generate all the val hammers I need (thanks BoD's!) to make the weapons I need. Armor can be a better choice (and easier to craft), since it wears so much less (and has better enhance opportunities). Especially for non-melee characters.
All said, a 7 mod weapon with 2x100 leech is not that hard to acquire, since you can just run BoD's to generate the val hammers needed to craft such weapons.
Sure, for PvM farming, I wouldn't use a 7 mod, but for boss fights where I can get 100 boss kills or something before needing a new weapon, yeah, it's something to consider. (It's something I consider, although I run gear slightly lower than this.)