[markatkinson]

Just to expand on this a bit, the Blueprints capabilities have grown to the point were you can create entire games without learning a single line of code.

The major downside I see to blueprints is a lack of source control. This is a pretty massive downside, and not something a professional team can forgo. But if you are looking to learn and understand the engine as a solo person Blueprints are a great place to start.

[Impossible]

Blueprints can be used with source control, so your comment is highly misleading. Merging and diffing blueprints is possible as well, as they are serialized in text format and there are tools to assist with that, but merging is unrelible. In practice Unity scenes and prefabs have the same issue. Professional teams, including Epic of course, use Blueprints heavily and always use source control...