"Because I want to" or "Because I have to"
Mother's Day
To a greater extent, the same can be said of Valentine's Day, when 79 percent of respondents said they felt compelled to do something through social or commercial pressure rather then because they really believe in the day as a 'proper' special occasion. Perhaps surprisingly, of all occasions featured in the survey, the opinions of men and women are actually closest when it comes to Valentine's Day - 78 percent of men and 80 percent of women said they think the day is celebrated due to outside pressures.

Description
This chart shows the 'special occasions' which people in the UK feel are celebrated due to commercial and social pressures.