This is all "in theory" but may not necessarily be true.

Age

Someone Younger

• Less wisdom

• Should be less mature

• Expected to be less responsible

Someone Older

• More wisdom

• Can be able to support you better financially, emotionally

• Should be more mature

• Expected to be more responsible

Distance

Short Distance

• More opportunities to meet each other regularly

• More chances for passive intimacy

Long Distance

• Meet more infrequently

• More expectations each time you meet

• Allows and requires you to be more independent

• Harder to physically support each other

• Naturally gives yourself space from your partner

• Requires more asynchronous communication

• Less chances for passive intimacy