Among other things it just makes sense as you can build into doing extra kinetic damage on chilled targets and the glaive does kinetic damage. Glaives aren't awful but being honest they aren't worthy of taking the place of most energy weapons.
I really want to run a glaive.......... But there are just so many better options for that slot.
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they also need a consistency update in PvP, and a ease of use update for everywhere. Its clunky to swap from shooting to meleeing and guarding. Half my shoots either hit the target and dont register, or they hit the target and give me blcok energy but deal no damage. This is a issue bungie.