It’s not quite the $500,000 forecast cybersecurity legend John McAfee wagered his manhood on, but Aaron Lasher, co-founder and CMO of Breadwallet, sees bitcoin’s market cap exploding to as high as $5 trillion within the next 10 years. That would put a single bitcoin in the ballpark of $250,000.

He warned, however, that there could be some serious pain along the way.

“As a longtime bitcoin holder,” Lasher told MarketWatch, “I’m greatly enjoying the recent price action, even though I understand that this bull market will likely be followed by a pretty brutal bear market.”

At this point, bitcoin BTCUSD, +2.42% already boasts a bigger market cap than the likes of Starbucks SBUX, -2.07% , having hit another record on Thursday to bring its market cap up to $78 billion-plus. Clearly, there’s still a long way to go for Lasher’s most optimistic scenario to unfold.

Bitcoin’s nosebleed ascent has understandably sparked fears of a bubble that will soon burst, leaving a trail of broken speculators in its wake.

“Are cryptos in a bubble? Yes, absolutely,” Lasher said. “Is that a bad thing? Not necessarily.”

Read: Literally just a huge bitcoin chart and bunch of stats that show its crazy rise

He explained that this isn’t the first time bitcoin has been caught in a “hype cycle,” and it surely won’t be the last.

“The long-term trend is up, however, so past bubbles look less impressive in the rearview mirror,” he said. “Do I know how high this bubble will go? Will I be selling any bitcoin before, during, or after the bubble? No.”

Still, Lasher warned that the uninitiated should approach with caution.

“I wouldn’t recommend any investor get involved with cryptos without extensive research beforehand,” he said. “It’s not a get-rich-quick scheme, and people who blindly throw money at it are likely to a) risk too much, b) buy too high, and c) sell too soon.”

Nevertheless, Lasher explained that, depending on an investor’s personal finance goals, cryptos, and bitcoin, in particular, can be a useful diversification tool, crisis hedge, and high-risk growth asset.

He isn’t just bullish on today’s leading cryptos either. Lasher said he expects that, within 10 years, there will be 10 digital currencies worth more than $25 billion each. As it stands now, ethereum at $36 billion is the only one besides bitcoin to top that level, according to Coinmarketcap.com.