When I switched to firefox (from galeon), I had to install several add-ons just to get back thesame functionality I had been used to (eg smarter tabbing). Are

When I switched to firefox (from galeon), I had to install several add-ons just to get back thesame functionality I had been used to (eg smarter tabbing). Are these 85% using add-ons because the add-ons are cooler? or because firefox just isn't as flexible/powerful out of the box?