Is an iMac worth it?

Is it worth it to buy an Apple - 27" iMac® with Retina 5K display - Intel Core i5 - 8GB Memory - 1TB Fusion Drive if I already have a MacBook Pro (Retina, 13-inch, Early 2015)? I'm an engineering student and need to run auto-CAD and other engineering programs. I also like to play games on my computer. My main focus is school and I do not think that my macbook pro will be enough. I know that I could get a cheap PC and it will run CAD and everything just fine but I enjoy the ability to transfer files and the compatibility as I also have an iPhone. So please do not give me any suggestions for PC's. So in short, if I have a MacBook Pro should I splurge and get an iMac or just try to get by with my laptop? Thank you!

Added (1). I do not care for anything better than my macBook pro for gaming. I only play Cities Skylines and it works well enough on my MacBook.

Help with my future card game?

I'm trying to make a card game similar to the obscure game Ingenious Inventions. Each card had a future invention. I'm trying to do that as well but I'm trying to cut them up into eras of time.

The Four eras are

Near-future Right around the corner

4th Industrial Revolution. The great burst of scientific and innovative discovery

Far future. Picture Star Wars or Star Trek

Age of Transcendence. Men are like gods

Each era needs 4 main inventions. The inventions should be compact like one or two words like desalination plant or iPhone. Nothing that is a drawn out explaining sentence but also not too vague

I have some ideas myself but I love creative input from other minds

My iPhone 7 isn't working correctly?

Today when I was on FaceTime with a friend my friend suddenly said that he couldn't hear me so I didn't think too
Much of it but when I tried to FaceTime my sister she couldn't hear me either. But when I say "hey Siri" or record a video on my
Camera it works perfectly. I also tried to record a video on Snapchat but it didn't work either, but when I use ear buds it works just fine too. What's wrong with my phone please help.

What could be wrong with my phone?

My iPhone does not want to turn on, all it does when we attempt at turning it on is shows the Apple logo then turns right off, what could be wrong with it?

Is there se type of glitch with instagram?

I'm logged into 3 account's on my my iPhone 6 (saying this because i don't know if it's my phone or IG) on my first account which is my main account everyrhing is normal on my second account which is my older instagram i'm alounf to skip threw videos like if someone posted a video i could skip threw as if i was on youtube and on my 3rd account the homepage is much diffrent the bookmark thing is stuff is on top it's just everything is diffrent is there some glitch

Should i get an iphone 6?

So i know i can't buy iphone 6 in the shops anymore only from ebay or used ones, but the iphone 6s is too expensive for me so i'm wondering if the iphone 6 is still good?