I've used C# years ago, then some Go for simple web services and CLIs and now I'm back at C# for those applications. You're missing out nothing if you're already familiar with C#. Go's biggest advantage is that it's much simper to learn. The whole experience feels much more lightweight and straight forward. Very easy to navigate the ecosystem.

Other than that, modern C# and .NET has the edge over Go almost everywhere. Good examples are obviously LINQ, null safety, extension methods, the type system in general, on the .NET side Generic Host (.NET standard solution for DI, config and logging for all kind of apps), Minimal API, EF Core, and performance. Memory usage for AOT is also very low, Go might have the edge here.

Currently learning ASP.NET Core, seems very well put together with quality first-party libraries. I miss Kotlin, but I suspect ASP.NET Core and Blazor SSR makes up for that.

Particularly excited by the fact that Blazor SSR lets you write server-side components. So I can have a statically typed language that lets me think about the UI in terms of components, and a DI container on hand for when I want to break business logic out into services. Love the flexibility all of those things coming together affords. EF Core seems really promising for persistence so far, though I need to play with it more.

Playing with their Identity framework last night I was able to get up and running despite being new to the ecosystem. Very good sign, most of the time integrating auth as a newcomer to a lot of languages ends up being way more than 2 hours worth of work.

Probably if you are fond of C# you wont like Go. I've always found C# incredibly verbose and full of all sorts of syntax sugar (that they add to yearly) making code everywhere look different, just enough to add a little cognitive overhead... Go on the otherhand, is purposefully opinionated and forces one more or less to write Go in a certain way.

It’s mostly the other way around. Go is a strictly worse, caveman experience after C#. In it’s best moments, Go is a sidegrade at most.

Go look at httpclient for .NET core 4.8

I mean, just the star count on GitHub is enough to show what the developer community thinks.

There is no such thing as “.NET Core 4.8”. There is no such thing as HttpClient’s GitHub repository either - HttpClient was never a separate project and was introduced into the standard library 12.5 years ago as the replacement to then aging WebRequest which had been around since version 1.1.

If you’re interested, .NET’s source code is hosted here: https://github.com/dotnet with the main repositories being runtime, roslyn, fsharp and sdk.