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Understanding crypto's 2017 and 2021 bull markets

Exploring the 2017 and 2021 Crypto Bull Markets | Insights from 2023 Enthusiasts

By

Laura Vasquez

Oct 17, 2025, 11:10 PM

Edited By

Naomi Kim

3 minutes reading time

Graph showing rising trends in cryptocurrency values for 2017 and 2021 bull markets
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In the wake of the recent crypto landscape, many newcomers are seeking to understand the markets of yesteryears, especially the standout bull runs of 2017 and 2021. With a backdrop of economic instability and market questions, these past events have stirred considerable debate among communities.

What Sparked the 2017 Boom?

The 2017 bull market caught many off guard, with Bitcoin skyrocketing to nearly $20,000. One user reflects, "It was like the Awakening of Crypto." This peak opened doors to a newfound belief in crypto's potential, attracting countless new investors.

The ICO Craze

That year was characterized by unprecedented interest in Initial Coin Offerings (ICOs), where projects aimed for astronomical returns. Many saw profits hit 10x, 20x, or beyond. However, the landscape was littered with scams. A commenter recalled how "most projects from the ICO craze are just completely gone"โ€”a harsh reminder of the volatility.

Trends and Comparisons to 2021

By 2021, the environment changed. While many anticipated growth, the circumstances appeared different. A user noted, "In 2020, Bitcoin had fallen to a low of around $6,000," before hitting an all-time high around $55,000. However, with Bitcoin's sudden drop to $30,000, panic set in.

The Shift to Altcoins

Profits from Bitcoin were often reinvested into altcoins, leading many to experience gains of 10-20x or more. This shift is a clear sign of patterns repeated over the years, where investor sentiment can rapidly turn. Commenters reflected, "Everyone said 'Alt Season is over,' but the reality is that many just reallocated funds."

Current Crypto Sentiment in 2025

Fast forward to 2025: economic distress and uncertainty are prevalent, partly influenced by political leadership. The current market environment is described as thin with many altcoins still at their lows. Observers note the same dynamics seem to be in play, urging caution. One insight shared is, "We need an infusion of capital to stir the alt market"

User Reflections on Market Evolution

The crypto community remains cautious yet hopeful. Voices from the forums suggest the current market shifts resemble the patterns of previous years. The trending sentiment indicates a blend of optimism and wariness, with reminders of past volatility. "This time feels passive compared to the chaos of earlier bull runs," stated a user, emphasizing the calmer present state of affairs.

Key Insights from Past Cycles

  • โšก 2017 Market: Unpredictable rallies fueled by enthusiasm. Major entry for new investors.

  • โณ 2021 Reality: Market volatility showed peaks and dramatic corrections; altcoins surged post-Bitcoin sell-off.

  • ๐Ÿ“‰ 2025 Outlook: Current market resembles previous lows. Communities express caution, anticipating potential recoveries.

Road Ahead for Crypto in 2025

As 2025 unfolds, there is a growing chance that the crypto market may see a resurgence, particularly as political dynamics shift and new policy initiatives are introduced. Experts estimate around a 60% probability of increased capital inflow that could rejuvenate altcoins and bring some stability. However, if economic conditions remain unstable, a cautious outlook persists. Many are bracing for another cycle similar to early 2021, where corrections may precede a larger rally. As the crypto community learns from past cycles, a more conservative approach might yield better long-term outcomes for investors.

A Fresh Perspective on Historical Patterns

A somewhat overlooked parallel appears when examining the rise and fall of the dot-com bubble in the late 90s and early 2000s. Just like today's crypto landscape, the internet saw a surge in enthusiasm and investment, followed by a sharp downturn that left many ventures in ruins. Yet, those who held onto their stocks during that turbulent time eventually reaped benefits in the subsequent tech boom. This historical lesson suggests that the current crypto environment could similarly evolve into a more solidified market, where patience and strategic investment might pay off in the long run.