Thanks for your concern for my welfare. I am not alone. I am sick of the last 3 years of the "Ruby Rulez, Java sucks crowd". Ruby/Rails has always been overhyped by pyschocotic devotees. This is just a little backlash.
Groovy seems to make more sense for the Java space. That's all.
If I had to choose, I would go for better java integration with Groovy using rather than focusing on JRuby.
Then I would pick Python via Jython since is it a) more popular b) more mature.
Then I would pick Scala since it provides great langague feature that are not found anywhere else and it augments what Java bring to the table.
Then I would pick PHP since it is a) more popular b) people actually use it.
Then I would pick Ecmacscript 4 via the next Rhino since it is a) more popular b) people actually use it c) it has great langague features in a very commonly used syntax d) looks a lot closer to Java than JavaScript.
Then if I still had some money, I would donate it charity and leave Ruby out in the cold like the match stick girl.