How would you feel if you are always being sterotyped...?

Ok so I'm small right, about 5'0 90lbs, a woman and indian..I am engaged to a wonderful man who is not indian..he's the most beautiful man Ive ever seen lol..Green eyes and black hair. NOW..I always wanted to be a handy woman lol. I tile bathrooms, I do landscaping, I fix roofs, leaks, I can build a house, I can fix a motorcycle. you name it I can fix it. I think the only thing I cannot fix is electrical wiring in a house. Anyway point is. I applied for this job and the guy basically said I couldn't do the job because I'm to small and dainty and basically it would be bad for business. NOW would you be pissed off? I showed him work I've done and he said "who helped you?". I then had my fiancee and the people whom I did tiling for call him and explain that NO ONE HELPED ME. Anyway would you be insulted? I told him I don't need his position, I can do odd jobs on my own which occasionally I do. It just really irritated me, like I know I'm tiny but I can do anything a man can do and prob better. LIKE one time..I worked a home depot and this guy told me that I couldn't ever work in a department because I'm to small and wouldn't be able to lift the doors..Well I got my chance and this older lady needed help and I put this 185 lb door on the cart without trouble. IT"S technique. Or one time I had this guy try to tell me I'm to small and he'll carry the quickcrete 100lb bags. I wouldn't of cared but he said it so rudely, so I said "NO I GOT IT" and I bent down and threw the 100lb over my shoulder and loaded his car. ANYWAY wouldn't it irritate you if people always umed you couldn't do things because you're to small, or your a woman? Why do people think this? And just because I'm a woman and do these things doesn't mean I'm gay either, I've gotten that line to. I have many gay friends but I'm engaged to a MAN! I love him with all my heart.