Widely spaced teeth are good, right?

Uh, uh. While it may be easier to clean between widely spaced teeth, spacing can result in food impact ion as well as tipping or drifting teeth with resultant gum damage. Askmyour dentist for referral to an orthodontic specialist for evaluation and recommendation as to whether treatment is indicated or not.
No. Spacing of teeth especially in the molar area can cause trauma to the tissues specially when chewing hard foods. It also applies to spacing of anteriors, e.g. When biting an apple. It also requires cosmetic procedure to enhance the smile, .
No difference. Widely spaced or close or crooked...They all just need to be properly cared for. That means brushing and flossing on a regular basis. Hopeful it is daily. Earl.