When the loads argue for it, yes; as a fashion, no. The honest triggers are concrete: no open breaker spaces with double tapped breakers making room, a generator, EV, hot tub, or addition planned, breakers warm or tripping under ordinary use, or a panel brand and era with a documented failure record. A 100 amp service running a small efficient home comfortably is not a problem to buy your way out of. The quote should state the load reasoning, the permit, and the grounding work included; a panel price without those is half a job.
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