I have 3 kids (4yr, 2yr and 11mo) and I got the same things when bike shopping recently. It's almost like I can't seriously be planning to ride a road bike (alone even) with that many little kids. I make it work becuase I love it so to heck with the salesman. I ended up buying my bike from a Lbs that treated me nicely instead of a bigger one becuase they blew me off.

I ride a 52" (not wsd) and I have a 31" inseam and I'm 5ft5in. Good luck on your shopping trips. Mom's like us need to make being active mom's the norm. Just because you have kids doesn't mean we shoud sit at home.