Everyone is egoistic these days

Halo everybody
I am married for the past ten years but postponed the kid and now for the past 4 years am trying for one.
I dont know where to post this discussion as I think if this issue is really related to this section. Sorry moderators. You can move this to any other realted section.

Of late I am noticing more and more ego problems with many of them I have to deal with. I dont know whether something has gone wrong with my mind or things have changed worse with others too. I feel that they enjoy hurting me.
The reason for my feeling bad is that whenever I go to any function or speak with any other person I can notice that many are answering/talking to others with a great ego put up on their heads.
Even for simple questions, they give answers as if they want to show that they are not less. Or they think they are giving back nicely. Hence I dont want to speak with anyone for that matter. I hate to go to any parties or functions or to talk with relatives too.
When I asked my aunt's DIL (say X) how my aunt would prepares veg Noodles, she said X would cook adding a little butter in the end. I dont understand why she wouldnt answer how my aunt makes the noodles. Instead she was answering how she herself made it.
And the other day, she was saying that she was lighting a lamp in a temple every friday. I asked her (Ya I shudnt have asked her so) "Enna Venduthala?", and she said all for you only (what a stupid comment). I clearly know she is not bothered about anyone in her husband's side. Then why such a nasty comment? I dont understand what makes her ego raise to her head for simple useless matters. She could have politely replied that she will tell once the prayer is fulfilled and avoided me. She is a B.E. grad and recently married and has a kid too.
And yet another day, she wants to know about an alliance for her mother's sister's son where the proposed girl lived in my area. When I made a call, she asked me if I knew the girl and I said I dont know her, may be my MIL might know and that I will ask her and tell. Till date she has never turned up to check it up with me. She has even met me thrice after that.
I usually call her and she just attends my calls. She never calls me, but calls only in rare cases like when there was an eclipse(at the time you dont have anything to do and will feel bored, I could understand it) and one more time when we were all planning to stay in my cousins house for her marriage (my two other cousins (her age) would leave her alone and be busy receiving others in a function)
And sometimes when I call her, while talking she would say 1 minute and give the mobile to her husband(my aunt's son) and he would continue talking with me.
Once when she came to a doctor in my area, I was in her area shopping with my neighbours. She called me and I said I was shopping. She kept repeating thrice that they both came with their kid to the doctor and thought to come to my house. Later I learnt from my husband that the doctor was not available and they were bored to go to their house and I and my husband invited them for a dinner that weekend. We had to call them everytime to check whether they were really coming as she said she had a doubt that they might be busy with their business. And we called them 4 to 5 times to make sure they are coming but she would call me only once just to confirm whether my husband would be available to give company to her husband. I was really fed up with these two ediots.
I always try to be polite with others. Sometimes I even take it when others hurt me with their words. All these years I never spoke back. But now I feel like I should have given back nicely. I only feel sad for treating me this way.
I dont know what problem goes on in their minds. Is it because I dont have a kid?

And few more such instances. I dont understand what this ediot has in her head. Is she alright and am I taking it too hard or is she really speaking wrong or is she very egoistic?
These days I am avoiding to make any calls to her since I couldnt stand her behaviour towwards me. And she is younger than me atleast for 5 years.

Dear ILs, please post your valuable comments on this issue.