It depends on the rest of life... I have 4 pigs split over two cages (they don’t get along) and that’s enough cleaning for my liking. I don’t want to be cleaning full cage every day of the week, as that would eat into my time actually handing and cuddling them. With 4, I’d be very unlucky to have multiple sick pigs on my hands in one go, which would be different in terms of odds if say, you had 10 piggies. I can’t imagine (and hope I won’t have to, but could if needed with 4 max!) syringe feeding and vet trips for multiples of sick piggies at once. Most I’ve spent in vet bills for one sick piggie was £800. Now... realistically, I can do that only so many times... if I had 10 pigs I may have to re-evaluate my finances for vet cover if needed!
You can’t save them all is what I do try and tell myself, despite having rescued a few when I wasn’t looking for piggies at the time. I’m at my max or my care for my others may suffer.
If you have the time, space, finances and love, then go for it.