As far as I can tell, humans enter reproductive age at aproximately age 13-14. So I would think that it is normal for sexual attraction to start around this time. I do think that people should collect experiences at that age.
Instead of focusing on suppressing people's (teenager's) natural desire for sex because of prudery / shame we should instead focus on providing information on safe / responsible sexual behaviours.
Suppressing such information out of fear that it will encourage teens to have sex is exactly the wrong approach. It will do nothing to suppress their sexual drive but will isntead cause them to engage in unsafe sexual behaviour out of ignorance.
I am European btw.