Definitely worth it!
Pharmacy fraternities are the stepping stone to help you meet new friends and get involved. You can then use the fraternity and your new connections to get more involved in the fraternity or in other pharmacy school areas.
Joining a fraternity first year was the best decision I made in pharmacy school as it absolutely opened doors for me in the fraternity and in many other areas of pharmacy school. I met students in multiple years of the program who took me under their wings and faculty members, too. Some of this you can do without a fraternity, but it's much harder.
These connections (and the experiences I gained because I first joined the fraternity) will be useful as a graduate, too.
Just remember, you get out of it what you put into it. If you put nothing in, you'll get nothing out.