To pick rather a large nit, saints in Catholicism aren't worshipped. Nor are angels or Mary. Saints and Mary, particularly, are venerated. This isn't the same as worship, which is reserved for God as expressed in the Trinity (which isn't a polytheistic concept, either). To put it very basically, saints are never, ever prayed to, although it may appear as such to non-Catholics. God is prayed to, saints are asked to intercede with God on behalf of the penitent. The 'logic' behind this is that saints are especially favoured by God, and they might put in a good word (so to speak) with God for you. Arguably the most famous prayer in Catholicism - Ave Maria - isn't a prayer to Mary, but a prayer asking Mary to pray for sinners.
It makes a weird king of sense if you were raised Catholic and said rosaries til your tongue went numb.
Boru
It makes a weird king of sense if you were raised Catholic and said rosaries til your tongue went numb.

Boru
‘I can’t be having with this.’ - Esmeralda Weatherwax