Seems there is a lot of mis-perception here. The Force, and indeed a lot of Buddhist philosophy, does not teach to avoid joy and/or happiness, does not teach to not enjoy life’s happy moments, but teaches not to become too attached to these feelings or let the pursuit of another “hit” of these feelings dictate our lives. Of course we should enjoy happiness when it comes along, but we should also realize that everything, EVERYTHING, is temporary (if it truly exists at all), so we should not let ourselves become too attached to something that will eventually change or disappear altogether. If we could realize this in our general day-to-day lives, the theory goes that we would live a much happier life in general instead of always struggling, clawing, desperately clinging to these temporary moments of happiness. Accept them, enjoy them, celebrate them!, but don’t cling desperately to them as this only brings unhappiness and the desire to not accept reality as it really is (temporary and relative, at best). Of course, this also helps when we come to life’s rough patches as well…