What are the redeeming qualities of nasturtiums?

For the first time this year I planted nasturtium seeds in the vegetable garden in the cucumber, pumpkin, and corn patch (3 separate areas). They have taken over. Based on their reseeding capabilities, world domination may be on the agenda.
They were planted for companion planting.....they have choked everything out-including the bush beans.
A mass purge is underway. I can see how they could have weed suppressing benefits, but certainly not at the expense of the veg.
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They are also often used as a sacrificial plant or decoy because they can attract and be covered in aphids which would otherwise be all over your crops.
Pick off the seeds daily and pop in a jar of cider vinegar to use instead of capers.
Add some flowers to a green salad for a bit of colour as well as flavour.
😋