What is the best cruise line to take and cruise route that has single women age 21-28?

I just got back from a 5 day 4 night Royal Caribbean Cruise that went to the Bahamas. There were no single women my age. From what I understand it is better to go on week long trip to Mexico or the Southern Caribbean on a Carnival Cruise. Help me out. I want to go back on a cruise but one with less families and less teenagers. Be sure to list a cruise line and cruise route
Try some of these websites:

Itinerary
Sunday, 4/6/2008
The Carnival Liberty departs Fort Lauderdale, Florida at 4:00PM . (arrive early, boarding is from 1:30PM to 3:30PM). Join all the fun-loving 20's and 30's SinglesCruise guests at the welcome aboard orientation mixer!

Monday, 4/7/2008
Key West 8:00 am - 5:00 pm
Tuesday, 4/8/2008
Fun Day at Sea . SinglesCruise invites all singles to a day full of activities! There will be special events just for our 20's and 30's single guests.

Wednesday, 4/9/2008
Lush green hills, unspoiled black sand beaches, tranquil blue lagoons and perfect sunsets of Grand Cayman ??7:00am ??4:00pm. This rainbow of colors can only be found on the unspoiled tropical retreat. Friday, 4/6/2007

Thursday, 4/10/2008
Ocho Rios, Jamaica 7:30am - 3:30pm

Friday, 4/11/2008
Enjoy a Day at Sea cruising the Caribbean. You can relax or enjoy some fun SinglesCruise activities. Tonight will also be our farewell cocktail party...cheers!

Saturday, 4/12/2008
The Carnival Liberty and all of our SinglesCruise guests arrive back to Fort Lauderdale, Florida (Port Everglades) at 8:00am . After an exciting week full of fun, the cruise has finally come to an end. The memories and all your new friends will last a lifetime!

Aug 23rd - Aug 27th
4 - Nights Hispanic Singles Cruise. Visits Key West & Calica Mexico. Departs from Miami. Prices Start $Call For Rates pp* (Prices includes Gov Fees, Taxes, Gratuities & Complimentary Salsa Dance Lessons)
More Info>

Aug 31st - Sept 3rd
3 - Nights Young Professionals (Ages 25-39) Nassau Singles Cruise. Visits Nassau Bahamas. Departs from Miami. Prices Start $Call For Rates pp* (Prices includes Gov Fees & Taxes)
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Oct 12th - Oct 15th
3 - Nights Columbus Day Weekend Singles Cruise. Visits CocoCay & Nassau. Departs from Miami. Prices Start $319.91pp* (Prices includes Gov Fees & Taxes)
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Oct 29th - Nov 2nd
4 - Nights Halloween Singles Cruise. Visits Key West & Cozumel. Departs from Miami. Prices Start $338.46pp* (Prices includes Gov Fees & Taxes)
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'Special Halloween Activities

Nov 9th - Nov 12th
3 - Nights African American Singles Cruise. Visits Nassau Bahamas. Departs from Miami. Prices Start $289.48pp* (Prices includes Gov Fees, Taxes & Gratuities)
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Nov 19th - Nov 24th
5 - Nights Pre-Thanksgiving Singles Cruise. Visits Grand Cayman & Cozumel. Departs from Tampa. Prices Start $489.27pp* (Prices includes Gov Fees & Taxes)
More Info>

Good luck! hope you find a fun one!!!