Personally I think any skill that historically was performed by women isn't given the respect and value its due - baking, dressmaking, embroidery, knitting, crochet etc. I see this frequently but recently saw someone online asking for a fabric item to be made, they offered to pay for their time or donate to a charity instead. Do solicitors, mechanics or plumbers get asked for their services in exchange for a donation to a charity of their choosing? I doubt it.
I agree with the first part of this post (saying traditional womens crafts/skills are underrated, and undervalued...)
I do disagree however, that other trades (typically more 'male' ones like plumbers and mechanics etc,) would not be asked to do stuff for free.
My brother is an I.T. expert (and works in I.T.) and he often gets people expecting freebies... 'just pop round and have a look at our kids' computer will ya? Only take 5 minutes won't it?'
Also, my friend's son is a mechanic, and at least 2 or 3 times a month, he gets someone expecting him to take quick look at their car, repair it etc etc, for free ... I also know someone who is in a semi professional band who tour round the UK, (and Europe) who gets asked frequently to perform for nothing. It will be good for your 'exposure' they get told! Like exposure can pay the rent and bills.
Same situation with a hairdresser I know, a plumber I know, and a gardener I know........
So yeah, it happens to a lot of people.
Re the baking cakes; as had been said, it is far too expensive now, and what I do (when asked for things like this,) is buy little fairy cakes from Lidl or Tesco (plain ones,) for about a pound for 12, and spread ready-made icing on them, and then decorate them with 100s and 1000s, and dried fruit and various decorations.
I don't claim they are made from scratch, but then I don't say they're not either. They don't ask... so there is no need to say anything. They are just normally chuffed to get the cakes!