Consider an Electra Townie or Day 6 step-through. In addition to being easy to mount and dismount, you can put both feet down on the ground without getting off the saddle, great during an unexpected stop. A RANS Fusion ST would be even better, but probably way more money than you want to spend, unless you can find a good deal on Craigslist, but most people like RANS crank forward bikes so much that they don't want to part with them. They're also more comfortable than regular bikes. At some point in life, one realizes that there's really no point in suffering if comfort is easy to attain. Some people believe recumbents are more comfortable, but the one problem most recumbents have is they can be difficult to hold up when stopped since the thighs are horizontal, and they can be hard to get on and off as well.