<human>: Give me the gist of the text in a nutshell

My common route for biking is pretty hilly, and my bike has 7 gears. I have to walk up some of the steeper grades. But the route is populated with a lot of serious riders. 

I am a fat cyclist. I love it, but sometimes people are really unhelpful with their comments. Total strangers (other cyclists) will ask if I'm ok when I'm walking my bike up a hill. Almost daily. And they follow up with "are you sure?" when I answer that I'm ok. 

I don't know if it's a gender thing or a weight thing, but it gets pretty patronizing? 

I've been back to biking for 6 months now, and I'm really surprised at how different it is now, versus when I was younger and a little leaner.  

While walking up a hill that a regular 21 speed could easily take, Mr. Gearhead Cyclist decided to say, "It's hard, but you've got to keep going." 

Um? I know? My house is 4 miles that way ahead of me, are you under the impression I wasn't going to make it? grrr.
<bot>: helpful" people make comments to "encourage" me when I'm taking it slow, but it just comes off as patronizing.