Why does gumbo take so long to make from scratch?

i cant make gumbo from sratch too often only special occassions cause im in the kitchen till 2 am cooking. all the slicing up onions and bell peppers fixing the roux i would rather just buy the frozen ready to eat gumbo dinners from zatarans taste the same
Update: it takes me over an hour to chop all of my veggies lol i don't know what im doing wrong, i need to just go ahead and invest in a food processor
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