Reason one: intergalactic trade hubs.
Reason two: biogas engines (add a steve's carts tree farm or an arboretum and you have easy saplings). clean, renewable energy (plus rocket fuel i think).
Reason three: bees. in general.
Reason four: bee genetics. because a genetic research lab add so much to a space base.
Reason five: with time, extra bees can bee a substitute for ic2 uu-matter.
Reason six: without ic2 cells, cans are a great alternative.
Feel free to make arguments for or against adding these.