"Sometimes it's a pain because my heels are so high and it would be really nice to have his arm," she says in September's Allure, available Aug. 20. "And he's such a great date! But it can be too much. I think especially for women, they can really lose their identity and just become 'wife of,' " she says.
But aside from Affleck being an Oscar-winning-actor-turned-director, Garner, 41, says becoming involved in politics may eventually be next for her husband.
"Would I be surprised if one day he did go into politics? No. But not now," she says, adding that she supports the idea. "I'm along for the ride."
Even if Affleck opts for a major career change, Garner says she's focused on her role as mother to Violet, 7½, Seraphina, 4½, and Samuel, 17 months.
Growing up, Garner says she "had a baby doll tucked under my arm everywhere I went." Later, when she became a teenager, "my friend and I ran a babysitting service, C&J Babysitting. I think we made $2 an hour. If you'd said to me, 'You could be a mom or you could be anything else in the world,' I would have been a mom."