I think your response is givng the impression of contraction by the fact of you are using the phrase "strictly speaking" and "I think" in the same response to a particular question.
Anyway, why did you say a comma should precede the and, strictly speaking. Are there any rules of grammar you are basing your conclusion/recommendation on?
No, I have changed my mind-- the comma is not strictly needed before the and, since the conjunction does not introduce an independent clause. However, I would still use it because I would wish to emphasize the sequence of events: (1) it will be short-lived, and then (2) it will be entertaining. If the depressing situation is not short-lived, it will have no entertainment value. T