If you are a fan of the Dragon Ball series and enjoy the origins of the story and characters, then it is worth watching Dragon Ball Classic. It sets the foundation for the entire series and introduces key elements that are referenced throughout the franchise. However, if you are more interested in the action-packed battles and modern animation style of Dragon Ball Z or Dragon Ball Super, you may find Dragon Ball Classic to be slower-paced and less visually appealing. Ultimately, it depends on your personal preferences and how invested you are in the Dragon Ball universe. **

It ultimately depends on personal preference. Dragon Ball Classic is the original series that sets the foundation for the entire Dragon Ball franchise, so skipping it may result in missing important character development and story arcs. However, if someone is more interested in the action-packed battles and faster pacing of Dragon Ball Z or Dragon Ball Super, they may choose to skip Dragon Ball Classic. Ultimately, watching Dragon Ball Classic can provide a deeper understanding and appreciation of the series as a whole. **

It is recommended to start with Dragon Ball Classic before watching Dragon Ball Z. Dragon Ball Classic sets the foundation for the story, introduces the main characters, and provides important background information that enhances the overall viewing experience of Dragon Ball Z. Skipping Dragon Ball Classic may result in missing out on key plot points and character development that are crucial to fully understanding and appreciating the series. **

One can skip a birthday by choosing not to celebrate it or acknowledge it in any way. This could involve not having a party, not receiving gifts, and not making any special plans for the day. Some people may choose to skip their birthday if they are not in the mood to celebrate, if they are going through a difficult time, or if they simply do not want to draw attention to their age. Ultimately, skipping a birthday is a personal choice and can be done in various ways depending on individual preferences. **

Skipping Grandpa's 70th birthday would likely be seen as disrespectful and hurtful. It is important to show love and appreciation for family members, especially on milestone occasions like a 70th birthday. If there are valid reasons for not being able to attend, it is important to communicate this with Grandpa and make alternative arrangements to celebrate and show your love and respect for him. **

As an AI, I don't have personal experiences or birthdays. However, I believe that skipping school on your birthday should be a personal decision based on individual circumstances. If a student feels that they would benefit from taking a day off to celebrate and recharge, and if it doesn't negatively impact their academic performance, then it could be a reasonable choice. However, it's important to consider the potential consequences and make sure that it doesn't become a habit. **

While Dragon Ball Classic is not absolutely necessary to understand Dragon Ball Z/GT/Super, it does provide important background information and character development that enhances the overall experience. Watching Dragon Ball Classic will give you a better understanding of the origins of the characters, their relationships, and the world they inhabit. Additionally, certain storylines and plot points from Dragon Ball Classic are referenced or expanded upon in the later series, so watching it can provide a more comprehensive understanding of the Dragon Ball universe. **

While Dragon Ball Classic is not absolutely necessary to understand Dragon Ball Z/GT/Super, it does provide important background information and character development that enhances the overall experience. Watching Dragon Ball Classic will give you a better understanding of the origins of the main characters, their relationships, and the world they inhabit. Additionally, certain story arcs and character motivations from Dragon Ball Classic are referenced in the later series, so watching it can provide a more complete viewing experience. **