I used to have a Leigh D4R jig for dovetails & etc, and sold it without regret the day after cutting my first dovetails by hand. Cutting DTs is one of my favorite parts of handtool woodworking without a doubt.
Do you have a quality dovetail saw? It certainly can be done with a cheapo, but high quality tools are a joy to use.

As far as the other machinery goes, for me it is a matter of the savings of time that a jointer and planer provide. I plane for finish, and have no problem dimensioning stock by hand that is too big for my jointer/planer. The real fun for me is in producing joinery with hand tools; you can keep the bull work