When should I use -sreg in WiX' HEAT.EXE?

I'm using HEAT to autogenerate WiX fragments for a directory of files.

The project I'm deploying is an ASP.NET project. When I tried to harvest a directory, HEAT generates RegistryValue entries that writes InProcServer32 entries for .NET DLLs.

Using -sreg removes said entries.

Questions:

1. Should I even be using HEAT to autogenerate fragments? I've read everywhere that I should not be doing this. When should I use HEAT?

2. Should I always use -sr开发者_StackOverfloweg? What if I'm deploying COM objects?

3. What is the downside of using -sreg when distributing .NET assemblies?

*Sorry, new to WiX and deployment as a whole. :)

1. In my opinion heat should be used as a first pass to generate a fragment. Opinions vary on this and many people like to use it in a build process.
2. Only use -sreg if would don't want the registry values. If you have COM you would want them. This is where answer 1 comes in, I think you run heat then edit the output to suit what you want to do.
3. Depends, .NET itself doesn't need the registry values but if you use COM it will. What values do you get for non-com assemblies?