This is a good one. I often find myself wanting to make a new character and then once I have, I find all the early quests tedious and boring, but I've committed to the new character. It's like a vicious cycle.
I got my itch to do a Khajiit, Altmer and Orc character out of my system by doing this so now I'm like, "I
soooo do not want to do Bleak Falls Barrow or re-learn alchemy ingredients' properties again right now." Which is partly why I abandoned them early on. I like the fun of shaping a new character skill-wise, but yeah, there are certain things I am really uninterested in re-doing right now, which is why I resurrected my Redguard character instead of making a new one, even though I kind of lost my way RP-wise with her and am trying to sort out what to do with her now.
If I get bored with my present three, I have my low-level Altmer, Khajiit and Orc to return to without having to escape from Helgen or go fetch those damn Golden Claw and Dragonstone again.
I need to come up with ideas of where to take my 3 characters now. My Dunmer's pretty much done most of Dragonborn that she can right now but doesn't seem too interested in settling down for some domestic time with her hubby, my Bosmer's built his three Hearthfire homes, and my Redguard just needs a reason to exist. So I guess that's my resolution. I suppose I could always return to the main quest with any one of them....LOL.
I also may resurrect my last Breton, Saozig a'Dhubh. She was close to lv 70 when she built Lakeview Manor and settled down to be single mother to Blaise and Sofie. Kind of curious to see how she'd do in Solstheim, since she is great at Shouts.