What would be the benefits of running Camle on osgi?

It is recommended to use blueprint with Camel if you run your routes on osgi.

But what would you miss out if your choose to run Camel routes in / imbedded
in Spring (SpringBoot) in stead of Karaf? You anyway get the ease of testing
with Spring.

Using Fuse : Camel, Activemq, and starting with Fabric. Do we "need" to use
Karaf?