If you ask this question to a group of Christians, you'll most likely get a variety of answers. This will depend on both their church denomination and "religious" background. Some Christians feel strongly that we should avoid Lent, while others promote the practice.
Biblically, Christians are not commanded to observe Lent. The word "lent" does not appear in the Bible, and nowhere in Scripture do we see Christ commanding His followers to imitate His 40 day desert experience. Nor do we see the disciples or early Christians in the New Testament following this practice.
Many in the Catholic/Anglican church view observing Lent as almost a salvation issue. Even many who do not attend church regularly or have a personal relationship with the Lord, still "give up something" for Lent and attend Ash Wednesday services, because it's the "way things are done".
This has (unfortunately) led to Lent being viewed by many evangelicals as an empty ritual, or a form of legalism.
I say "unfortunately", because Lent can be a great way to prepare yourself spiritually for this Easter, and should not (in my opinion) be summarily dismissed by those unfamiliar with the tradition.
However, as beautiful and as meaningful as the 40 day observance of Lent can be, there is nothing special attached to it if you do observe Lent. We are still saved by grace through faith, with or without Lent.
We should not feel obligated to observe Lent, or do it because we think will receive something special. Instead, it should be because we feel called to observe Lent or think it would be beneficial for us in our walk with the Lord.
Very many evangelical Christians do not observe Lent tend to avoid Lent because of the legalism commonly tied to it. They (quite rightly, in my opinion), believe that religious ritual performed just for the sake of tradition, without any heart-connection, brings no honour or glory to the Lord, and does not benefit the one observing it, if it makes no change in their spiritual lives outside of those 40 days.
This is why Jesus warns His followers against "vain babblings", and prayer and fasting in order to be seen (Matthew 6: 1 - 8).
In conclusion, we should make sure that whether we decide to observe Lent or pass it over, that we do it in a way that glorifies God and points to God and not legalism. Whether or not to observe Lent is a personal decision for each of us, but I do urge you to consider it - and also to consider your motives if you are already doing it.
I would encourage us all to avoid observing Lent if we are only doing it to look good in front of others, or solely because people are pressuring you to observe Lent.