Singles in there 40s in your area!!

I am getting old I guess. About 6 months ago I was getting spam advertising single available women in my area of Nagoya...hehe. Now all of a sudden the 30s have changed to 40s... I am now getting spam telling me there are single women available in their 40s in my area... So what happened in 6 months?? Am I now not able to date single women in their 30s???? Funny!! 20s, 30s, 40s.... who cares??!! But I will always be in my 30s.....at least in my heart.